Tying Water in a Knot
These fluid knots are like smoke rings–but made of water and shaped like a pretzel instead of a donut.
13:16
A Natural Particle Accelerator, Far Above the Planet
Closer study of the Van Allen radiation belts above Earth is providing new questions for science.
17:29
Russia Meteor Renews Focus on Asteroid Threats
Astronomers weigh in on how to keep the planet safe from near-Earth objects.
41:43
Tracking a Space Rock’s Streak Past Earth
Asteroid 2012 DA14 spans half a football field, and will whiz by the Earth a mere 17,000 miles above us–closer than many satellites.
Watch the Asteroid Flyby Live
A roundup of live streams that will let you watch the approach of asteroid 2012 DA14 online.
Meteor Steals Asteroid’s Thunder
A meteor streaks over Russia, just before Earth’s close shave with an asteroid.
16:27
Researchers Point to the Demise of the Dinosaurs
Scientists are working to refine the dates for an ancient cosmic collision.
4:50
Dung Beetles Use Cosmic GPS to Find Their Way
Dung beetles use light from the Milky Way to help them navigate at night.
How to Cook on Mars (Recipe Included)
Whipping up a yummy Martian snack isn’t as hard as it might seem.