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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 evidence of a comet strike on Earth
When it exploded in Earth's atmosphere, the comet rained down a shock wave of fire that obliterated every life form in its path.
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
Researchers quantify toxic ocean conditions during major extinction
UC Riverside-led study points to an ancient oxygen-free and hydrogen sulfide-rich ocean that may foreshadow our future.
October 28, 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
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
Aboriginal hunting practice increases animal populations
Burning approach mixing practical philosophy and knowledge leads to near doubling of lizards and improves habitat.
October 25, 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
The most distant galaxy yet
It's the most distant, and therefore the earliest, yet discovered. It's seen as it was just 700 million years after the Big Bang.
October 23, 2013
Link between Neanderthals and humans is still missing
The search for a common ancestor that connects modern humans with the Neanderthals who lived in Europe thousands of years ago isn’t over yet, researchers say.
October 22, 2013
