Outer Space
Dark Matter Could Be Destroying Distant Galaxies
The mysterious substance may suck gas from the galaxies—and a gasless galaxy is a dead galaxy
Eugene Cernan: The Last Man on the Moon and So Much More
His experience helped make spaceflight safer
Fish Don’t Do So Well in Space
The International Space Station’s resident fish shed light on life in microgravity
SpaceX Gets Back in Orbit: Watch Its Latest Rocket's Remarkable Landing
After successfully deploying ten satellites into orbit, the rocket's first stage adeptly landed on a floating platform
New Hubble Image Captures the Collision of Two Galaxies
A beautiful look at a violent event
Earth's Moon Could Be Made From 20 Mini Moons
Our celestial buddy could have formed after multiple impacts—not one giant smash up
A Sneaky Asteroid Buzzed By Earth Yesterday
The space rock passed by at about half the distance between our planet and the moon
Catch a Star Exploding in Action in 2022
Just five years from now a pair of stars are predicted to merge, forming a glittery and bright new point in the sky
The International Space Station Will Finally Welcome a Black Astronaut
In May 2018, flight engineer Jeanette J. Epps will begin her mission on the ISS
NASA Just Announced Two New Missions, But Shelved Others
Though the new missions have exciting prospects, some scientists aren’t thrilled by the decision
Fireworks Not Your Thing? Then Look Out For a Comet on New Year’s Eve
With a telescope in hand, you can watch a comet zoom past the Earth tomorrow night
Five Things to Know About Boundary-Breaking Astronomer Vera Rubin
Her observations confirmed the theory of dark matter, and her activism helped open science to more women
Celebrate Christmas With the First Voice Ever Broadcast in Space
Eisenhower kicked off the space race with a goodwill wish
Sure, Earth Could Get Hit by a Deadly Asteroid—But There’s an Upside
Con: Devastating outer space impacts. Pro: Global unity!
Check Out NASA's Picks for This Year's Best Images of Earth
From sunsets to city lights, the images capture the beauty of our ever-changing planet
Scientist Warns We're Unprepared for a Comet Strike
NASA researcher Joseph Nuth proposes that we build and store two spacecraft to deal with potential comet or asteroid strikes
The Full Moon May Dull the Dazzle of this Year's Geminid Meteor Shower—But You Can Still Catch a Glimpse
With just the right timing, stargazers could catch a few of the sparkling streaks
Japan Testing "Space Tether" to Knock Junk Out of Orbit
The KITE experiment will use a half-mile long cable to guide some of the 500,000 chunks of space junk out of orbit
For a Larger-Than-Life Space Icon, John Glenn Was Remarkably Down-to-Earth
Friends and colleagues recall his abiding love for Smithsonian’s work, the history of spaceflight and peanut butter buckeyes
Check Out New Pictures of Saturn From Cassini’s Latest Orbit
New images of the ringed planet herald the spacecraft’s demise
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