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The Longest Total Lunar Eclipse of the 21st Century Lights Up the Skies This Weekend
You'll have one hour and 43 minutes to catch a glimpse.
ASTRONOMY
Saturn and a Strawberry Moon Will Brighten Night Skies This Week
The two bodies will appear close together in the sky on Wednesday.
NASA Has a Plan to Stop the Next Asteroid That Threatens Life on Earth
Don't panic—the U.S. government has a plan for doomsday.
7 Giant Machines That Changed the World—And 1 That Might
From a 17-mile-long particle accelerator to a football field–sized space observatory, these machines are marvels.
NASA's Hubble Telescope Captures the Lagoon Nebula's Explosive Core
At the heart of this nebula lies a star that's larger and brighter than our Sun.
It's Official: Uranus Smells Like Farts
The planet's putrid atmosphere is a clue to where it first formed.
New NASA Satellite Called TESS Could Discover Thousands of New Planets
The new satellite follows on the heels of Kepler's discovery of more than 2,300 exoplanets over the last nine years.
An Astronomer Solves a 70-Year-Old Ansel Adams Mystery
Donald Olson solves mysteries using celestial bodies.
Why Are There Shooting Stars?
Have you ever seen a flash of bright light streaking through the night sky? People around the world have different ways of explaining these so-called shooting stars.
How to Watch the Chinese Space Lab Tiangong-1 Plummet to Earth
The remains could land pretty much anywhere.
A Newly Discovered Galaxy Has a Shocking Feature—No Dark Matter
"The galaxy is a complete mystery, as everything about it is strange."
What Is a Scientific Theory?
A theory in science is very different from a theory in everyday conversation.
Hubble Telescope Image Shows Two Galaxies Colliding 350 Million Light-Years Away
The process will play out over millions of years.
10 Facts About the Dwarf Planet Makemake
The entire planet is only three times as long as the Grand Canyon.
Look Up! Residents of Maine and Michigan Might Catch a Glimpse of the Northern Lights Tonight
The celestial treat is usually reserved for Arctic audiences.
10 Facts About the Dwarf Planet Haumea
It's named for a Hawaiian goddess.
Winter Meteors, Valentine's Day Star, and a Black Moon: A Guide to the February Night Sky
There are a few wonders in the winter sky worth making time for.
Here’s Where to Watch NASA's Livestream of the Super Blue Blood Moon
The next one won't be until 2037.
Don’t Miss Next Week’s Incredibly Rare 'Super Blue Blood Moon Eclipse'
It's three lunar events rolled into one.
Mysterious 'Hypatia Stone' Is Like Nothing Else in Our Solar System
"These latest results are opening up even bigger questions about its origins."
9 Compelling Facts About Neptune
Neptune is like a celestial paint swatch: a stunning royal blue that demands attention.
Space Dust, Not an Alien Megastructure, Is to Blame for Star's Bizarre Behavior
A new study sheds light on the cause of the famous dimming of "Tabby's star."