The Closest Exoplanet to Earth Was Probably a Ghost
Medieval Supernova Lit Earth’s Skies for Months
Study Finds Sleepiness Is As Dangerous As Texting While Driving
Astronomers Have Discovered the Oldest Stars Ever Seen in Our Galaxy
Did Our Hands Evolve to Throw Punches? One Biologist Thinks So
What Do Those Symbols on the iPhone Mean?
We Finally Know What Happened to Water on Mars
Ants Communicate by Swapping Spit
A Huge Gash Just Appeared On the Sun
16 Perfectly Recolored Photos From NASA Missions In The '60s And 70s
Scientists Predict the Alps Will Lose 70 Percent of Its Snow by 2100
Science Says the Best Kind of Sleep Happens in a Tent
The 10 biggest spaceflight stories of 2016
The F-16 Looks Positively Space-Aged in this Aerodynamics Test
Take A Look At 'Solar Impulse 2's Epic Journey
Cygnus Is the Cutest of the Space Station Cargo Craft.
Exercises That Will Strengthen Your Attention
4 Surprising Things That Might Actually Cause Alzheimer’s Disease
8 Unusual Things That Have Fallen Out of the Sky
Scientists Identify 20 Alien Worlds Most Likely To Be Like Earth
How We'll Get to Mars by 2033
How to Turn Drone Photography into Breathtaking Art
A Trash-Munching Robot Could Turn Space Junk Into Propulsion
Astronauts Almost Killed Their First Flowers.
10 Inventions by Thomas Edison (That You've Never Heard Of)
Will NASA Be Able to Stop a Real-Life 'Armageddon'?
Britain discovers its 'first selfie': a 4,000-year-old stone carving
Is Fluoride Actually Bad For Us?
11 Weirdest Things Your Brain Does
How Do Antarctic Scientists Eat Fresh Eggs?
There Are Strange Hot Spots On Giza's Great Pyramid, And No One's Quite Sure Why
In the Battle of Ears Vs. Eyes, Who Wins?
This Supersonic Jet Could Take You From NYC to London in Three Hours
Feds Bust Huge 'Avalanche' Hacker Network in Global Sting Operation