Exploratorium

Exploratorium

Posts tagged “space”

txchnologist:

To celebrate the 15th anniversary of NASA’s Chandra X-ray Observatory, four new images of supernova remnants are being released. These spectacular cosmic vistas are the glowing debris fields that were created when massive stars exploded at the ends of their lives.
Chandra, one of NASA’s current “Great Observatories,” along with the Hubble Space Telescope and Spitzer Space Telescope, is specially designed to detect X-ray emission from hot and energetic regions of the universe. It obits up to 86,500 miles above the Earth.
To celebrate Chandra’s 15th anniversary, four new images of supernova remnants – the Crab Nebula, Tycho, G292.0+1.8, and 3C58 – were released by the space agency. These supernova remnants are very hot and energetic and glow brightly in X-ray light, which allows Chandra to capture them in exquisite detail. See a larger version here.
Courtesy NASA.
Read More

txchnologist:

To celebrate the 15th anniversary of NASA’s Chandra X-ray Observatory, four new images of supernova remnants are being released. These spectacular cosmic vistas are the glowing debris fields that were created when massive stars exploded at the ends of their lives.

Chandra, one of NASA’s current “Great Observatories,” along with the Hubble Space Telescope and Spitzer Space Telescope, is specially designed to detect X-ray emission from hot and energetic regions of the universe. It obits up to 86,500 miles above the Earth.

To celebrate Chandra’s 15th anniversary, four new images of supernova remnants – the Crab Nebula, Tycho, G292.0+1.8, and 3C58 – were released by the space agency. These supernova remnants are very hot and energetic and glow brightly in X-ray light, which allows Chandra to capture them in exquisite detail. See a larger version here.

Courtesy NASA.

Read More

(via science-junkie)

Behind the scenes at the Exploratorium staff offices, you’ll find curious artifacts like this. This guy has travelled with us from the vaults of our old location to Pier 15. Rumor has it that it’s an original NASA early-Apollo era demo suit!

Behind the scenes at the Exploratorium staff offices, you’ll find curious artifacts like this. This guy has travelled with us from the vaults of our old location to Pier 15. Rumor has it that it’s an original NASA early-Apollo era demo suit!

Mars. We’re going.
Did you know that the Rosetta Mission spacecraft is due to be “woken up” on Monday, January 20th? (How cool is that?!) It has been in space for nearly 12 years, orbiting Earth, Mars, and some asteroids, and collecting loads of data since the European Space Agency launched it in 2004. Then in June of 2011, it went into deep space hibernation-mode….  Join Exploratorium scientists Paul Doherty and Isabel Hawkins for a LIVE webcast on the Rosetta Mission TODAY, Saturday, January 18 at 1pm. Learn details of the mission as it continues on its journey to Comet 67P/Churyumov-Gerasimenko, where it will make the most detailed study of a comet ever attempted. Rosetta will follow the comet on its journey through the inner solar system, measuring the increase in activity as the sun warms its icy surface. The first images of the comet are expected in May.  Watch live on Explo.tv: http://www.exploratorium.edu/tv/?project=115&program=1477&type=webcast

Did you know that the Rosetta Mission spacecraft is due to be “woken up” on Monday, January 20th? (How cool is that?!) It has been in space for nearly 12 years, orbiting Earth, Mars, and some asteroids, and collecting loads of data since the European Space Agency launched it in 2004. Then in June of 2011, it went into deep space hibernation-mode….

Join Exploratorium scientists Paul Doherty and Isabel Hawkins for a LIVE webcast on the Rosetta Mission TODAY, Saturday, January 18 at 1pm. Learn details of the mission as it continues on its journey to Comet 67P/Churyumov-Gerasimenko, where it will make the most detailed study of a comet ever attempted. Rosetta will follow the comet on its journey through the inner solar system, measuring the increase in activity as the sun warms its icy surface. The first images of the comet are expected in May.

Watch live on Explo.tv: http://www.exploratorium.edu/tv/?project=115&program=1477&type=webcast

Exploratorium Picks:2013 Year in Science Stories From the “shmeaty” goodness of a test-tube hamburger to the glimmer of water on Mars, it’s been a year in science to remember—and in some cases (yep, we’re talking to you, comet ISON) to forget. Here are some of our picks for the year in science. We’ll share one of our top science stories each day of the first week of 2014. See them all at #2013SciencePicks.6. Comet ISON FlybyInbound from the mysterious Oort cloud near the boundary of our solar system, comet ISON promised to (possibly) light up the December sky with a dazzling day-visible display. Alas, hype and hyperbole provided most of the entertainment, as the actual performance fizzled when the comet broke into bits after performing a hairpin turn around the sun. Astronomers were nonetheless pleased by the dazzling data payload.http://www.nasa.gov/ison/

Exploratorium Picks:

2013 Year in Science Stories


From the “shmeaty” goodness of a test-tube hamburger to the glimmer of water on Mars, it’s been a year in science to remember—and in some cases (yep, we’re talking to you, comet ISON) to forget. Here are some of our picks for the year in science. We’ll share one of our top science stories each day of the first week of 2014. See them all at #2013SciencePicks.

6. Comet ISON Flyby

Inbound from the mysterious Oort cloud near the boundary of our solar system, comet ISON promised to (possibly) light up the December sky with a dazzling day-visible display. Alas, hype and hyperbole provided most of the entertainment, as the actual performance fizzled when the comet broke into bits after performing a hairpin turn around the sun. Astronomers were nonetheless pleased by the dazzling data payload.
http://www.nasa.gov/ison/

Hello Explonauts, Astronomy on the Terrace TONIGHT! Great chance to see the International Space Station tonight at 5:40pm PST. Here’s a map that should help you find it.  Also, on the Exploratorium’s terrace tonight after 8pm, we’ll have a telescope out observing Jupiter which will have shadow on its surface from its moon, Io. Our moon will also be bright and an easy target. Maybe we will see the Rupes Recta?! (http://en.wikipedia.org/wiki/Rupes_Recta) Bonus! Early (and bright) Geminid meteors should be visible too. Bring a warm hat and hot bevvy.

Hello Explonauts,

Astronomy on the Terrace TONIGHT! Great chance to see the International Space Station tonight at 5:40pm PST. Here’s a map that should help you find it.

Also, on the Exploratorium’s terrace tonight after 8pm, we’ll have a telescope out observing Jupiter which will have shadow on its surface from its moon, Io.

Our moon will also be bright and an easy target. Maybe we will see the Rupes Recta?! (http://en.wikipedia.org/wiki/Rupes_Recta)

Bonus! Early (and bright) Geminid meteors should be visible too. Bring a warm hat and hot bevvy.

The Voyager-1 spacecraft has become the first manmade object to leave the Solar System!
[Remember? Both Voyager 1 and 2 carry the Golden Record… http://voyager.jpl.nasa.gov/spacecraft/goldenrec.html]
Scientists say the probe’s instruments indicate it has moved beyond the bubble of hot gas from our Sun and is now moving in the space between the stars.
Launched in 1977, Voyager was sent initially to study the outer planets, but then just kept on going. Voyager will live out its days circling the centre of our Milky Way Galaxy
(Continue reading the full article via BBC News - Voyager probe ‘leaves Solar System’)

The Voyager-1 spacecraft has become the first manmade object to leave the Solar System!

[Remember? Both Voyager 1 and 2 carry the Golden Record… http://voyager.jpl.nasa.gov/spacecraft/goldenrec.html]

Scientists say the probe’s instruments indicate it has moved beyond the bubble of hot gas from our Sun and is now moving in the space between the stars.

Launched in 1977, Voyager was sent initially to study the outer planets, but then just kept on going. Voyager will live out its days circling the centre of our Milky Way Galaxy

(Continue reading the full article via BBC News - Voyager probe ‘leaves Solar System’)

Mars Update: Feb. 2013 | Return to Mars | Exploratorium TV

On Mars, as on Earth, sometimes things can take on an unusual appearance. A case in point is a shiny-looking rock seen in a recent image from NASA’s Curiosity Mars Rover. Join us live, online tomorrow, February 20, 2013, at 4:00p.m. PST to learn about Curiosity’s latest findings.

Eagerly anticipating the Curiosity Mars Rover’s first drilling maneuvers. This will also be the first time any robot has drilled into rock to COLLECT SAMPLES FROM MARS! (via NASA - Curiosity Maneuver Prepares for Drilling)

Eagerly anticipating the Curiosity Mars Rover’s first drilling maneuvers. This will also be the first time any robot has drilled into rock to COLLECT SAMPLES FROM MARS! (via NASA - Curiosity Maneuver Prepares for Drilling)

infinity-imagined:

City lights photographed from the International Space Station and Neurons imaged with fluorescence microscopy.
Source images; Cities (1) (2) (3) (4) (5), Neurons (1) (2) (3) (4) (5)
infinity-imagined:

City lights photographed from the International Space Station and Neurons imaged with fluorescence microscopy.
Source images; Cities (1) (2) (3) (4) (5), Neurons (1) (2) (3) (4) (5)
infinity-imagined:

City lights photographed from the International Space Station and Neurons imaged with fluorescence microscopy.
Source images; Cities (1) (2) (3) (4) (5), Neurons (1) (2) (3) (4) (5)
infinity-imagined:

City lights photographed from the International Space Station and Neurons imaged with fluorescence microscopy.
Source images; Cities (1) (2) (3) (4) (5), Neurons (1) (2) (3) (4) (5)
infinity-imagined:

City lights photographed from the International Space Station and Neurons imaged with fluorescence microscopy.
Source images; Cities (1) (2) (3) (4) (5), Neurons (1) (2) (3) (4) (5)
infinity-imagined:

City lights photographed from the International Space Station and Neurons imaged with fluorescence microscopy.
Source images; Cities (1) (2) (3) (4) (5), Neurons (1) (2) (3) (4) (5)
infinity-imagined:

City lights photographed from the International Space Station and Neurons imaged with fluorescence microscopy.
Source images; Cities (1) (2) (3) (4) (5), Neurons (1) (2) (3) (4) (5)
infinity-imagined:

City lights photographed from the International Space Station and Neurons imaged with fluorescence microscopy.
Source images; Cities (1) (2) (3) (4) (5), Neurons (1) (2) (3) (4) (5)
infinity-imagined:

City lights photographed from the International Space Station and Neurons imaged with fluorescence microscopy.
Source images; Cities (1) (2) (3) (4) (5), Neurons (1) (2) (3) (4) (5)
infinity-imagined:

City lights photographed from the International Space Station and Neurons imaged with fluorescence microscopy.
Source images; Cities (1) (2) (3) (4) (5), Neurons (1) (2) (3) (4) (5)

infinity-imagined:

City lights photographed from the International Space Station and Neurons imaged with fluorescence microscopy.

Source images; Cities (1) (2) (3) (4) (5), Neurons (1) (2) (3) (4) (5)

sagansense:

Yearlong Space Missions Will Present Physical and Mental Challenges
image 1: This picture of the International Space Station and the moon was photographed from the space shuttle Atlantis just after the two spacecraft undocked on July 19, 2011, during NASA’s final shuttle mission STS-135.image 2: Expedition 26 Commander Scott Kelly wears a blue wrist band that has a peace symbol, a heart and the word “Gabby” to show his love of his sister-in-law U.S. Rep. Gabrielle Giffords as he rests shortly after he and cosmonauts Oleg Skripochka and Alexander Kaleri landed in their Soyuz TMA-01M capsule in Kazakhstan on March 16, 2011.image 3: Russian cosmonaut Mikhail Kornienko, Expedition 23 flight engineer, is pictured near fresh tomatoes floating freely in the Unity node of the International Space Station in May 2010.
NASA is getting ready to send astronauts on yearlong missions to the International Space Station, doubling the duration of a typical orbital stay. These long-term missions will be sending spaceflyers into largely uncharted territory, and some of the biggest unknowns are how the human mind and body will react to that much time in space.NASA has long known that weightlessness wreaks havoc on the body, with astronauts losing muscle mass and bone density, and even suffering eyesight degeneration, after spending time in space. “While it’s definitely new territory for NASA, I wouldn’t expect the challenges of a yearlong mission to be substantially different from those of a six-month mission,” said former space station commander Michael Lopez-Alegria, who is now president of the Commercial Spaceflight Federation. “A yearlong mission will be beneficial to Human Research Program scientists as they continue to expand the envelope of human spaceflight so that one day we can undertake the longer missions that we think will be necessary to voyage beyond cis-lunar space,” or the region between Earth and the moon.
Another health risk associated with spaceflight is radiation: Beyond the protective confines of Earth’s atmosphere, astronauts are exposed to potentially dangerous radiation from the sun, and the longer they spend in space, the more radiation they receive.
And the health risks are just one side of the challenge. Psychologically, the isolation and confinement of life on the space station can be tough to deal with as well.
Though exercise machines installed on the space station can mitigate the body issues, and phone calls and emails home can help the mind, both of these problems should be more severe for crews spending twice the normal mission length in orbit.
“For the crew, the biggest challenge would be psycho-social,” another former space station commander, Leroy Chiao, wrote in an email. “It is difficult to be away for a long period of time. Fortunately, the ISS features excellent communication tools for crews to keep in touch with friends and loved ones.”
Though some cosmonauts spent a year or longer on previous space missions to the Russian Mir station, no one has ever lived for a year at the International Space Station. The first ISS yearlong crew will be NASA astronaut Scott Kelly and Russian cosmonaut Mikhail Kornienko, who are due to launch in 2015.
Kelly, a former U.S. Navy test pilot with combat experience, said he thinks he’s up to the challenge.
“We have a really good group of people here, the behavioral health and performance group, that works with us to try to mitigate the psychological impact of being away from home and isolated for a long time,” Kelly told SPACE.com during an interview earlier this month. “I kind of recognize what I need in that regard and what I can do to make it better.”
And as for the risk to his bodily health, Kelly said he’s prepared to take it on.
“I’m not a big worrier, but I certainly understand that there is more risk,” he said. “But in anything I’ve done throughout my career — flying aircraft as a test pilot — there’s risk and reward, and you have to weigh the risks, and I think it’s worth it.”
sagansense:

Yearlong Space Missions Will Present Physical and Mental Challenges
image 1: This picture of the International Space Station and the moon was photographed from the space shuttle Atlantis just after the two spacecraft undocked on July 19, 2011, during NASA’s final shuttle mission STS-135.image 2: Expedition 26 Commander Scott Kelly wears a blue wrist band that has a peace symbol, a heart and the word “Gabby” to show his love of his sister-in-law U.S. Rep. Gabrielle Giffords as he rests shortly after he and cosmonauts Oleg Skripochka and Alexander Kaleri landed in their Soyuz TMA-01M capsule in Kazakhstan on March 16, 2011.image 3: Russian cosmonaut Mikhail Kornienko, Expedition 23 flight engineer, is pictured near fresh tomatoes floating freely in the Unity node of the International Space Station in May 2010.
NASA is getting ready to send astronauts on yearlong missions to the International Space Station, doubling the duration of a typical orbital stay. These long-term missions will be sending spaceflyers into largely uncharted territory, and some of the biggest unknowns are how the human mind and body will react to that much time in space.NASA has long known that weightlessness wreaks havoc on the body, with astronauts losing muscle mass and bone density, and even suffering eyesight degeneration, after spending time in space. “While it’s definitely new territory for NASA, I wouldn’t expect the challenges of a yearlong mission to be substantially different from those of a six-month mission,” said former space station commander Michael Lopez-Alegria, who is now president of the Commercial Spaceflight Federation. “A yearlong mission will be beneficial to Human Research Program scientists as they continue to expand the envelope of human spaceflight so that one day we can undertake the longer missions that we think will be necessary to voyage beyond cis-lunar space,” or the region between Earth and the moon.
Another health risk associated with spaceflight is radiation: Beyond the protective confines of Earth’s atmosphere, astronauts are exposed to potentially dangerous radiation from the sun, and the longer they spend in space, the more radiation they receive.
And the health risks are just one side of the challenge. Psychologically, the isolation and confinement of life on the space station can be tough to deal with as well.
Though exercise machines installed on the space station can mitigate the body issues, and phone calls and emails home can help the mind, both of these problems should be more severe for crews spending twice the normal mission length in orbit.
“For the crew, the biggest challenge would be psycho-social,” another former space station commander, Leroy Chiao, wrote in an email. “It is difficult to be away for a long period of time. Fortunately, the ISS features excellent communication tools for crews to keep in touch with friends and loved ones.”
Though some cosmonauts spent a year or longer on previous space missions to the Russian Mir station, no one has ever lived for a year at the International Space Station. The first ISS yearlong crew will be NASA astronaut Scott Kelly and Russian cosmonaut Mikhail Kornienko, who are due to launch in 2015.
Kelly, a former U.S. Navy test pilot with combat experience, said he thinks he’s up to the challenge.
“We have a really good group of people here, the behavioral health and performance group, that works with us to try to mitigate the psychological impact of being away from home and isolated for a long time,” Kelly told SPACE.com during an interview earlier this month. “I kind of recognize what I need in that regard and what I can do to make it better.”
And as for the risk to his bodily health, Kelly said he’s prepared to take it on.
“I’m not a big worrier, but I certainly understand that there is more risk,” he said. “But in anything I’ve done throughout my career — flying aircraft as a test pilot — there’s risk and reward, and you have to weigh the risks, and I think it’s worth it.”
sagansense:

Yearlong Space Missions Will Present Physical and Mental Challenges
image 1: This picture of the International Space Station and the moon was photographed from the space shuttle Atlantis just after the two spacecraft undocked on July 19, 2011, during NASA’s final shuttle mission STS-135.image 2: Expedition 26 Commander Scott Kelly wears a blue wrist band that has a peace symbol, a heart and the word “Gabby” to show his love of his sister-in-law U.S. Rep. Gabrielle Giffords as he rests shortly after he and cosmonauts Oleg Skripochka and Alexander Kaleri landed in their Soyuz TMA-01M capsule in Kazakhstan on March 16, 2011.image 3: Russian cosmonaut Mikhail Kornienko, Expedition 23 flight engineer, is pictured near fresh tomatoes floating freely in the Unity node of the International Space Station in May 2010.
NASA is getting ready to send astronauts on yearlong missions to the International Space Station, doubling the duration of a typical orbital stay. These long-term missions will be sending spaceflyers into largely uncharted territory, and some of the biggest unknowns are how the human mind and body will react to that much time in space.NASA has long known that weightlessness wreaks havoc on the body, with astronauts losing muscle mass and bone density, and even suffering eyesight degeneration, after spending time in space. “While it’s definitely new territory for NASA, I wouldn’t expect the challenges of a yearlong mission to be substantially different from those of a six-month mission,” said former space station commander Michael Lopez-Alegria, who is now president of the Commercial Spaceflight Federation. “A yearlong mission will be beneficial to Human Research Program scientists as they continue to expand the envelope of human spaceflight so that one day we can undertake the longer missions that we think will be necessary to voyage beyond cis-lunar space,” or the region between Earth and the moon.
Another health risk associated with spaceflight is radiation: Beyond the protective confines of Earth’s atmosphere, astronauts are exposed to potentially dangerous radiation from the sun, and the longer they spend in space, the more radiation they receive.
And the health risks are just one side of the challenge. Psychologically, the isolation and confinement of life on the space station can be tough to deal with as well.
Though exercise machines installed on the space station can mitigate the body issues, and phone calls and emails home can help the mind, both of these problems should be more severe for crews spending twice the normal mission length in orbit.
“For the crew, the biggest challenge would be psycho-social,” another former space station commander, Leroy Chiao, wrote in an email. “It is difficult to be away for a long period of time. Fortunately, the ISS features excellent communication tools for crews to keep in touch with friends and loved ones.”
Though some cosmonauts spent a year or longer on previous space missions to the Russian Mir station, no one has ever lived for a year at the International Space Station. The first ISS yearlong crew will be NASA astronaut Scott Kelly and Russian cosmonaut Mikhail Kornienko, who are due to launch in 2015.
Kelly, a former U.S. Navy test pilot with combat experience, said he thinks he’s up to the challenge.
“We have a really good group of people here, the behavioral health and performance group, that works with us to try to mitigate the psychological impact of being away from home and isolated for a long time,” Kelly told SPACE.com during an interview earlier this month. “I kind of recognize what I need in that regard and what I can do to make it better.”
And as for the risk to his bodily health, Kelly said he’s prepared to take it on.
“I’m not a big worrier, but I certainly understand that there is more risk,” he said. “But in anything I’ve done throughout my career — flying aircraft as a test pilot — there’s risk and reward, and you have to weigh the risks, and I think it’s worth it.”

sagansense:

Yearlong Space Missions Will Present Physical and Mental Challenges

image 1: This picture of the International Space Station and the moon was photographed from the space shuttle Atlantis just after the two spacecraft undocked on July 19, 2011, during NASA’s final shuttle mission STS-135.
image 2: Expedition 26 Commander Scott Kelly wears a blue wrist band that has a peace symbol, a heart and the word “Gabby” to show his love of his sister-in-law U.S. Rep. Gabrielle Giffords as he rests shortly after he and cosmonauts Oleg Skripochka and Alexander Kaleri landed in their Soyuz TMA-01M capsule in Kazakhstan on March 16, 2011.
image 3: Russian cosmonaut Mikhail Kornienko, Expedition 23 flight engineer, is pictured near fresh tomatoes floating freely in the Unity node of the International Space Station in May 2010.

NASA is getting ready to send astronauts on yearlong missions to the International Space Station, doubling the duration of a typical orbital stay. These long-term missions will be sending spaceflyers into largely uncharted territory, and some of the biggest unknowns are how the human mind and body will react to that much time in space.

NASA has long known that weightlessness wreaks havoc on the body, with astronauts losing muscle mass and bone density, and even suffering eyesight degeneration, after spending time in space.

“While it’s definitely new territory for NASA, I wouldn’t expect the challenges of a yearlong mission to be substantially different from those of a six-month mission,” said former space station commander Michael Lopez-Alegria, who is now president of the Commercial Spaceflight Federation. “A yearlong mission will be beneficial to Human Research Program scientists as they continue to expand the envelope of human spaceflight so that one day we can undertake the longer missions that we think will be necessary to voyage beyond cis-lunar space,” or the region between Earth and the moon.

Another health risk associated with spaceflight is radiation: Beyond the protective confines of Earth’s atmosphere, astronauts are exposed to potentially dangerous radiation from the sun, and the longer they spend in space, the more radiation they receive.

And the health risks are just one side of the challenge. Psychologically, the isolation and confinement of life on the space station can be tough to deal with as well.

Though exercise machines installed on the space station can mitigate the body issues, and phone calls and emails home can help the mind, both of these problems should be more severe for crews spending twice the normal mission length in orbit.

“For the crew, the biggest challenge would be psycho-social,” another former space station commander, Leroy Chiao, wrote in an email. “It is difficult to be away for a long period of time. Fortunately, the ISS features excellent communication tools for crews to keep in touch with friends and loved ones.”

Though some cosmonauts spent a year or longer on previous space missions to the Russian Mir station, no one has ever lived for a year at the International Space Station. The first ISS yearlong crew will be NASA astronaut Scott Kelly and Russian cosmonaut Mikhail Kornienko, who are due to launch in 2015.

Kelly, a former U.S. Navy test pilot with combat experience, said he thinks he’s up to the challenge.

“We have a really good group of people here, the behavioral health and performance group, that works with us to try to mitigate the psychological impact of being away from home and isolated for a long time,” Kelly told SPACE.com during an interview earlier this month. “I kind of recognize what I need in that regard and what I can do to make it better.”

And as for the risk to his bodily health, Kelly said he’s prepared to take it on.

“I’m not a big worrier, but I certainly understand that there is more risk,” he said. “But in anything I’ve done throughout my career — flying aircraft as a test pilot — there’s risk and reward, and you have to weigh the risks, and I think it’s worth it.”

we-are-star-stuff:

Black Holes Have Properties That Resemble Dynamics of Both Solids and Liquids
Black holes are surrounded by many mysteries, but now researchers from the Niels Bohr Institute, among others, have come up with new groundbreaking theories that can explain several of their properties. The research shows that black holes have properties that resemble the dynamics of both solids and liquids.
Black holes are extremely compact objects in the universe. They are so compact that they generate an incredibly strong gravitational pull and everything that comes near them is swallowed up. Not even light can escape, so light that hits a black hole will not be reflected, but will be entirely absorbed, as a result, they cannot be seen and we call them black holes.
“But black holes are not completely black, because we know that they emit radiation and there are indications that the radiation is thermal, i.e. it has a temperature,” explains Niels Obers, a professor of theoretical particle physics and cosmology at the Niels Bohr Institute at the University of Copenhagen.
Multiple dimensions
Researchers know that the black holes are very compact, but they do not know what their quantum properties are. Niels Obers works with theoretical modelling to better understand the physics of black holes. He explains that you can look at a black hole like a particle. A particle has in principle no dimensions. It is a point. If you give a particle an extra dimension, it becomes a string. If you give the string an extra dimension, it becomes a plane. Physicists call such a plane a ‘brane’ (the word ‘brane’ is related to ‘membrane’ from the biological world).
“In string theory, you can have different branes, including planes that behave like black holes, which we call black branes. The black branes are thermal, that is to say, they have a temperature and are dynamical objects. When black branes are folded into multiple dimensions, they form a ‘blackfold’,” explains Niels Obers, who worked out this new way of looking at black branes with associate professor in theoretical physics at the Niels Bohr Institute, Troels Harmark, back in 2009.
New breakthrough
Niels Obers and his two doctoral students Jay Armas and Jakob Gath have now made a new breakthrough in the description of the physics of black holes based on the theories of the black branes and blackfolds,
“The black branes are hydro-dynamic objects, that is to say that they have the properties of a liquid. We have now discovered that black branes also have properties, which can be explained in terms of solids. They can behave like elastic material when we bend them,” explains Jay Armas.
He explains that when the black branes are bent and folded into a blackfold, a so-called piezoelectric effect (electricity that occurs due to pressure) is created. This new effect can be understood as a slightly bent and charged black string with a greater concentration of electric charge on the innermost side in relation to the outermost side. This produces two electrically charged poles on the black strings. Black holes are predicted by Einstein’s theory of gravity. This means that there is a very surprising relationship between gravity and fluid mechanics and solid-state physics.
“With these new theories, we expect to be able to explain other black hole phenomena, and we expect to be able to better understand the physical properties of neutron stars. We also expect to gain a greater understanding of the so-called particle theories, which are, for example, relevant for understanding the quark-gluon-plasma in the primordial universe,” explains Niels Obers.

we-are-star-stuff:

Black Holes Have Properties That Resemble Dynamics of Both Solids and Liquids

Black holes are surrounded by many mysteries, but now researchers from the Niels Bohr Institute, among others, have come up with new groundbreaking theories that can explain several of their properties. The research shows that black holes have properties that resemble the dynamics of both solids and liquids.

Black holes are extremely compact objects in the universe. They are so compact that they generate an incredibly strong gravitational pull and everything that comes near them is swallowed up. Not even light can escape, so light that hits a black hole will not be reflected, but will be entirely absorbed, as a result, they cannot be seen and we call them black holes.

“But black holes are not completely black, because we know that they emit radiation and there are indications that the radiation is thermal, i.e. it has a temperature,” explains Niels Obers, a professor of theoretical particle physics and cosmology at the Niels Bohr Institute at the University of Copenhagen.

Multiple dimensions

Researchers know that the black holes are very compact, but they do not know what their quantum properties are. Niels Obers works with theoretical modelling to better understand the physics of black holes. He explains that you can look at a black hole like a particle. A particle has in principle no dimensions. It is a point. If you give a particle an extra dimension, it becomes a string. If you give the string an extra dimension, it becomes a plane. Physicists call such a plane a ‘brane’ (the word ‘brane’ is related to ‘membrane’ from the biological world).

“In string theory, you can have different branes, including planes that behave like black holes, which we call black branes. The black branes are thermal, that is to say, they have a temperature and are dynamical objects. When black branes are folded into multiple dimensions, they form a ‘blackfold’,” explains Niels Obers, who worked out this new way of looking at black branes with associate professor in theoretical physics at the Niels Bohr Institute, Troels Harmark, back in 2009.

New breakthrough

Niels Obers and his two doctoral students Jay Armas and Jakob Gath have now made a new breakthrough in the description of the physics of black holes based on the theories of the black branes and blackfolds,

“The black branes are hydro-dynamic objects, that is to say that they have the properties of a liquid. We have now discovered that black branes also have properties, which can be explained in terms of solids. They can behave like elastic material when we bend them,” explains Jay Armas.

He explains that when the black branes are bent and folded into a blackfold, a so-called piezoelectric effect (electricity that occurs due to pressure) is created. This new effect can be understood as a slightly bent and charged black string with a greater concentration of electric charge on the innermost side in relation to the outermost side. This produces two electrically charged poles on the black strings. Black holes are predicted by Einstein’s theory of gravity. This means that there is a very surprising relationship between gravity and fluid mechanics and solid-state physics.

“With these new theories, we expect to be able to explain other black hole phenomena, and we expect to be able to better understand the physical properties of neutron stars. We also expect to gain a greater understanding of the so-called particle theories, which are, for example, relevant for understanding the quark-gluon-plasma in the primordial universe,” explains Niels Obers.

(via project-argus)

explore-blog:

1962 models of the moon.

First NASA analysis of soil samples from Mars Curiosity mission released this week! Hear from our Senior Scientist, Dr. Paul Doherty, who reports from the American Geological Union (AGU) conference in San Francisco to learn what they’ve found.