Moroccan Meteorite May Be a 4.4-Billion-Year-Old Chunk of Martian Crust

Mars is often referred to as the Red Planet, but its signature color is only skin-deep. Beneath its rusty regolith, Mars has many other hues, including large dark regions formed by ancient lava flows. Now, researchers believe they may have found a pieceof Mars' dark plains here on Earth, in the form of a meteorite… » 1/31/15 3:11pm Today 3:11pm

Check Out Crash Course Astronomy, A New YouTube Series From Phil Plait

Throughout the year, as Earth progresses through its orbit around the sun, one can witness stars in the night sky rise and set at different times. It's an example of an astronomical cycle visible to the naked eye, and the first of three subjects in Episode 3 of Crash Course Astronomy, a new series by Bad Astronomy's… » 1/30/15 8:00pm Yesterday 8:00pm

Freakishly Old System Of Planets Hint At Ancient Alien Civilizations

Kepler scientists have discovered the oldest known system of rocky, Earth-sized planets in the Milky Way. This suggests that terrestrial planets have appeared throughout most of the Universe's 13.8 billion year history — a potential indication of just how ancient some extraterrestrial civilizations could be. » 1/27/15 8:00am Tuesday 8:00am