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Is our universe ringing like a crystal glass?
Two physicists say the universe's expansion has sped up, then slowed down, 7 times since time began. They describe this oscillation as the universe "ringing."
June 26, 2015
Titan’s strange lakes may be sinkholes
What forms the depressions holding liquid hydrocarbon lakes on Saturn's moon Titan? It might be a process similar to that creating caves and sinkholes on Earth.
June 26, 2015
Exoplanet has a comet-like tail Gliese 436b
A Neptune-sized exoplanet is being trailed by an immense cloud of hydrogen. This discovery might also suggest a method for detecting extrasolar oceans.
June 25, 2015
How close to finding alien life?
The search for life beyond Earth has heated up. Here are some of the ways that scientists have been thinking and talking about it, including a definition of new buzzword: biosignatures.
June 25, 2015
Methane in Mars meteorites = life?
Biological processes can produce methane. Its presence in Martian meteorites might mean Mars was or is habitable for microbial life. Or it might not.
June 25, 2015
First color movies of Pluto and Charon
It's not Disney quality, but these distant worlds are real and 3 billion miles (5 billion km) away.
June 23, 2015
Geomagnetic storm on its way, June 22 and 23
It's due to arrive sometime today (June 22, 2015). NOAA forecasters estimate a 90% chance of polar geomagnetic storms when the CME arrives. Aurora alert!
June 22, 2015
All systems go for Europa mission
Jupiter's moon Europa is a promising place to look for life beyond Earth. A new mission to Europa is now moving forward from concept review to development.
June 21, 2015
Venus and Jupiter dance in daylight
Most of us think only of viewing planets at night, but sometimes you can catch them in broad daylight! The next great chance to do that is Saturday, June 20.
June 19, 2015
Super new views of Saturn’s moon Dione!
The Cassini spacecraft is performing a series of "lasts" over the coming year. This week's sweep past Dione was the second-to-last.
June 19, 2015
