Where Do the Geminids Come From? (Hint: It’s Not a Comet)
Evidence suggests that these fireballs don’t come from a comet, but an asteroid with a tail.
Airplane of the Future?
This plane looks blue under ultraviolet light, but it’s designed to be green.
A Monarch Retreat
For Californians, Thanksgiving is prime time for butterfly counting.
Bristling at the Cold
Its brown and black bristles help this creature survive harsh winters.
Saturn Says ‘Cheese’
The Cassini spacecraft’s sweeping shot shows Saturn, its moons and rings, and Earth, Venus, and Mars.
Rainbow in a Tree
This eucalyptus’ kaleidoscopic bark is a photographer’s delight.
Mavericks Of The Bat World
Mexican free-tailed bats engage in aerial acrobatics reminiscent of the jet maneuvers in “Top Gun.”
Great Balls of Lightning!
The phenomenon has impressed people for centuries, but it has yet to be created in the lab.
A Double Take on the Northern Lights
A method using consumer grade photography gear offers a fresh look at the aurora borealis.
The Uncanny Geometry of Martian Dunes
A lofty view from space reveals the Red Planet’s polygonal geometry.