Sorry conspiracy theorists, but the snow in Atlanta was real.

A conspiracy theory is floating around that someone other than Mother Nature is responsible for Atlanta's latest snowfall, spurred on by clips of people burning snowballs black. This video, using a lighter and some snow, explains why they're wrong — and explores the phenomenon of "snow that doesn't melt." » 2/03/14 7:00pm 2/03/14 7:00pm

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

The most scientifically inaccurate Mars movies ever

This week on the io9 show, we ask why it is that NASA can put a robot on Mars, but Hollywood can't make any realistic movies about the red planet. We examine the worst Mars movies ever, and special guest Phil Plait (the good astronomer behind the Bad Astronomy blog) helps us figure out how realistic they are.… » 8/10/12 12:27pm 8/10/12 12:27pm

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

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… » 7/24/08 7:54pm 7/24/08 7:54pm