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Scientists find Earth-sized rocky exoplanet
With a radius about 1.2 times that of Earth and a mass equal to about 1.7 times Earth’s, Kepler-78b has a density that's the same as Earth’s, suggesting that it is also made primarily of rock and iron.
October 30, 2013
First-ever deep space craft, Orion, powered up
The Orion spacecraft - planned to carry astronauts on missions beyond low-Earth orbit - has been powered on for the first time at Kennedy Space Center in Florida.
October 29, 2013
Will a box like this someday bring back samples from Mars?
Still probably many years in the future and most likely international in nature, a Mars sample-return mission is one of the most challenging space ventures possible for robotic exploration.
October 29, 2013
See Comet ISON move in front of the stars
Justin Ng in Singapore acquired this time-lapse video of Comet ISON - this year's most-watched comet - over 69 minutes on October 27, 2013.
October 29, 2013
Astronauts and cosmonauts call for global cooperation on asteroid threat
“Asteroid impacts have dramatically altered the course of life on Earth and a rogue asteroid will certainly strike Earth, posing a global threat to human life and society.” - Astronaut Tom Jones
October 28, 2013
Two X-flares, and two radio blackouts, Friday
The sun was very active on Friday! It released two X-flares, the most powerful kind of solar flares, causing two temporary radio blackouts.
October 25, 2013
A glimpse of the violent past of Milky Way’s giant black hole
A new study shows that the Milky Way's supermassive black hole had at least two major outbursts in the last few centuries.
October 25, 2013
Another close sweep by asteroid due in 2065
Russian astronomers recently discovered an asteroid that will sweep closely past Earth in 2032. Now they've announced another object that'll sweep closely past in 2065.
October 25, 2013
The coldest place in the universe
Astronomers say the Boomerang Nebula is the coldest place in the universe at one degree Kelvin (minus 458 degrees Fahrenheit). It's even colder than background space.
October 24, 2013
Our Milky Way galaxy wobbles
Our home galaxy, the Milky Way, makes small wobbling movements. Possible causes include the passage of a smaller galaxy through our own.
October 24, 2013
