Why would aliens come all this way just to invade Earth?

In movies, when aliens invade our planet, they usually have a ludicrous motivation. Like, they're after our water. Or our gold. (Hint: Asteroids have gold.) Space travel is incredibly difficult and expensive — so why would aliens actually bother to come and invade us? We asked some experts for reasons that actually… » 5/02/13 1:30pm 5/02/13 1:30pm

How Actual Science Can Make Science Fiction Stories Cooler

How do the minds behind Battlestar Galactica, Prometheus, X-Men: First Class, and Torchwood go about juggling science fact and science fiction, to tell a believable story? Bad Astronomy's Phil Plait hosted a panel at San Diego Comic-Con yesterday to discuss this issue, along with the making and breaking canon in… » 7/13/12 8:40am 7/13/12 8:40am

The Most Beautiful Video of the Moon We've Seen in Ages

Unless you're an astronaut, we're willing to bet that you have never seen the Moon depicted as stunningly as it is here. For close to three years now, NASA's Lunar Reconnaissance Orbiter has been snapping high resolution photos of the Moon's surface. Now, the Goddard Visualization Studio has used those images to… » 3/02/12 3:23pm 3/02/12 3:23pm

This is the most stunning video of comet Lovejoy we've seen yet

By now you've probably heard about Comet 2011/W3 (more commonly known as Lovejoy) — the audaciously bold comet that, to the surprise of many, recently survived an exceptionally close encounter with our Sun. » 12/27/11 11:30am 12/27/11 11:30am

Science Bloopers (and Successes) from Battlestar Galactica

At the awesome panel called "The Science Behind Science Fiction," Phil "Bad Astronomer" Plait was joined by Kevin Grazier, a rocket scientist and science adviser for Battlestar Galactica and Eureka. Grazier said that sometimes the actors on the shows are as rabid about getting the science right as he is: James "Baltar"… » 7/24/08 7:54pm 7/24/08 7:54pm