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Fifth gas giant planet in early solar system?
Our solar system might've once had five gas giant planets. The fifth might have gotten the boot after a close encounter with Jupiter, 3.9 billion years ago.
September 21, 2011
Running Chicken Nebula image in ruby red
An image from the European Southern Observatory shows the Running Chicken Nebula, a star-forming region in space, 6,500 light-years away.
September 21, 2011
Dinosaur-killing asteroid origin remains a mystery
NASA's WISE mission rules out the Baptistina family of asteroids in the search for which ones were the dinosaur-killing asteroid.
September 20, 2011
Earth eclipsed the sun yesterday
See an eclipse yesterday (September 19, 2011) when the Earth eclipsed the sun. SDO has eclipse seasons twice a year.
September 20, 2011
Comet Elenin: Still not a spaceship or doomsday comet
Is Comet Elenin showing any signs of being a spaceship, colliding with Earth or creating three days of darkness? It's just an ordinary comet.
September 18, 2011
Video of Vesta from the Dawn spacecraft fly-around
NASA space scientists studying asteroid Vesta helped make this video of Vesta simulating the experience of flying in the Dawn spacecraft around the asteroid.
September 17, 2011
First planet found to orbit two suns
A newly found first planet orbiting two suns - like the fictional Tatooine, home world of Luke Skywalker in Star Wars. EarthSky spoke to one of the discoverers.
September 15, 2011
Heavy-lift rocket announced by NASA
The Space Launch System is a new heavy-lift rocket planned by NASA, similar to the Saturn V rockets that launched men toward the moon 40 years ago.
September 15, 2011
James Webb Space Telescope receives lifeline from U.S. Senate
A U.S. Senate committee has proposed to allow the embattled James Webb Space Telescope to launch. There are more political hurdles, but it's a step forward.
September 15, 2011
NASA image reveals Earth eclipse of the sun
Eclipse season for the Solar Dynamics Observatory begins twice a year near each equinox.
September 14, 2011
