Space Thread
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DrCaleb @ Thu Mar 07, 2013 2:56 pm
raydan raydan:
DrCaleb DrCaleb:
Black holes rotate at nearly the speed of light!
http://news.discovery.com/space/galaxie ... 130227.htm
$1:
Astronomers have directly measured the spin of a black hole for the first time by detecting the mind-bending relativistic effects that warp space-time at the very edge of its event horizon -- the point of no return, beyond which even light cannot escape.
By monitoring X-ray emissions from iron ions (iron atoms with some electrons missing) trapped in the black hole’s accretion disk, the rapidly-rotating inner edge of the disk of hot material has provided direct information about how fast the black hole is spinning.
And by doing this, a long-standing controversy surrounding black hole studies has been laid to rest.
By monitoring X-ray emissions from iron ions (iron atoms with some electrons missing) trapped in the black hole’s accretion disk, the rapidly-rotating inner edge of the disk of hot material has provided direct information about how fast the black hole is spinning.
And by doing this, a long-standing controversy surrounding black hole studies has been laid to rest.
http://news.discovery.com/space/galaxie ... 130227.htm
So we have something so massive that light cannot escape...
...and now we know that it's spinning at nearly the speed of light.
You want to try to calculate what E is equal to?
No, that would be a really big number.
Like an ice skater who is spinning and pulls in their arms, as a star collapses into a black hole it keeps spinning and accellerating. It might only be the size of a tennis ball, but it still weights 100 times our own sun'n mass!
Gunnair @ Tue Mar 12, 2013 8:48 pm
Infrared picture of Orion Nebula
Gunnair @ Tue Mar 12, 2013 8:49 pm
Saturn's hexagonal clouds
Gunnair @ Tue Mar 12, 2013 8:50 pm
Curiosity self portrait
Strutz @ Tue Mar 12, 2013 8:53 pm
That first one has some incredible colours going on!
Captions please on these pics?
Gunnair @ Tue Mar 12, 2013 8:55 pm
Strutz Strutz:
That first one has some incredible colours going on!
Captions please on these pics?
Captions please on these pics?
Done
Strutz @ Tue Mar 12, 2013 9:10 pm
Gunnair Gunnair:
Strutz Strutz:
That first one has some incredible colours going on!
Captions please on these pics?
Captions please on these pics?
Done
Thanks
The 3rd one I knew was Curiosity. Almost looks like he's waving at the camera
DrCaleb @ Mon Apr 29, 2013 3:52 pm
$1:
PASADENA, Calif. - NASA's Cassini spacecraft has provided scientists the first close-up, visible-light views of a behemoth hurricane swirling around Saturn's north pole.
In high-resolution pictures and video, scientists see the hurricane's eye is about 1,250 miles (2,000 kilometers) wide, 20 times larger than the average hurricane eye on Earth. Thin, bright clouds at the outer edge of the hurricane are traveling 330 mph(150 meters per second). The hurricane swirls inside a large, mysterious, six-sided weather pattern known as the hexagon.
"We did a double take when we saw this vortex because it looks so much like a hurricane on Earth," said Andrew Ingersoll, a Cassini imaging team member at the California Institute of Technology in Pasadena. "But there it is at Saturn, on a much larger scale, and it is somehow getting by on the small amounts of water vapor in Saturn's hydrogen atmosphere."
Scientists will be studying the hurricane to gain insight into hurricanes on Earth, which feed off warm ocean water. Although there is no body of water close to these clouds high in Saturn's atmosphere, learning how these Saturnian storms use water vapor could tell scientists more about how terrestrial hurricanes are generated and sustained.
Both a terrestrial hurricane and Saturn's north polar vortex have a central eye with no clouds or very low clouds. Other similar features include high clouds forming an eye wall, other high clouds spiraling around the eye, and a counter-clockwise spin in the northern hemisphere.
In high-resolution pictures and video, scientists see the hurricane's eye is about 1,250 miles (2,000 kilometers) wide, 20 times larger than the average hurricane eye on Earth. Thin, bright clouds at the outer edge of the hurricane are traveling 330 mph(150 meters per second). The hurricane swirls inside a large, mysterious, six-sided weather pattern known as the hexagon.
"We did a double take when we saw this vortex because it looks so much like a hurricane on Earth," said Andrew Ingersoll, a Cassini imaging team member at the California Institute of Technology in Pasadena. "But there it is at Saturn, on a much larger scale, and it is somehow getting by on the small amounts of water vapor in Saturn's hydrogen atmosphere."
Scientists will be studying the hurricane to gain insight into hurricanes on Earth, which feed off warm ocean water. Although there is no body of water close to these clouds high in Saturn's atmosphere, learning how these Saturnian storms use water vapor could tell scientists more about how terrestrial hurricanes are generated and sustained.
Both a terrestrial hurricane and Saturn's north polar vortex have a central eye with no clouds or very low clouds. Other similar features include high clouds forming an eye wall, other high clouds spiraling around the eye, and a counter-clockwise spin in the northern hemisphere.
http://www.nasa.gov/mission_pages/cassi ... 30429.html
raydan @ Mon Apr 29, 2013 3:59 pm
Gunnair posts a pic of Saturn's hexagonal clouds on this page and then you post this.
This actually looks like a boil I once had on my ass.
DrCaleb @ Mon Apr 29, 2013 4:04 pm
raydan raydan:
Gunnair posts a pic of Saturn's hexagonal clouds on this page and then you post this.
This is a false colour image of the very centre of Gunnair's photo.
The hexagonal clouds have been seen since the Voyager days. I still think they are cool.
Gunnair @ Mon Apr 29, 2013 4:52 pm
Dust Pillar of the Carina Nebula
Gunnair @ Mon Apr 29, 2013 4:54 pm
Ringside with Rhea
Mowich @ Mon Apr 29, 2013 4:58 pm
Gunnair Gunnair:
Infrared picture of Orion Nebula
Gunnair @ Mon Apr 29, 2013 4:58 pm
The Horsehead Nebula in Infrared from Hubble
Gunnair @ Mon Apr 29, 2013 5:00 pm
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