The search for life beyond Earth has heated up. Here are some of the ways that scientists have been thinking and talking about it.
Biological processes can produce methane. Its presence in Martian meteorites might mean Mars was or is habitable for microbial life. Or it might not.
The moon will be full on July 2, to stage the first of two July 2015 full moons. The second of two full moons in a calendar month is often called a Blue Moon.
It’s not Disney quality, but these distant worlds are real and 3 billion miles (5 billion km) away.
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!
Scientific arguments suggest that alien civilizations should be common in our galaxy. If so, where is everybody? That question is known as the Fermi paradox.
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.
How sunlight falls on Earth’s surface during the solstices and equinoxes, as seen from geosynchronous orbit.
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.