Astronomy

Astronomy is a broad discipline covering all facets of astrophysics. In this section you can learn about the origins of the universe, black holes and other astronomical phenomena.

Topics to Explore

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Why Are Planets Almost Spherical?

Why not cylindrical? Or even cube-shaped?

Haumea, a Dwarf Planet in the Kuiper Belt, Has Its Own Ring

Things are getting a little more interesting out in Pluto's neighborhood.

Kilonovas Are Some of the Biggest, Baddest Stellar Blasts in Space

Get ready for the most powerful electromagnetic explosion the universe has ever known.

New NASA Images Reveal Snowy Martian Dunes

Drop your keys and grab your skis. There's fresh Martian powder out there, as new NASA photos reveal in stunning detail.

Massive Asteroid Passing Near Earth in September, But Don't Freak Out

On Friday, Sept. 1, a large asteroid named Florence will zip by at a distance of about 4.4 million miles (7 million kilometers) — a tiny distance relative to the entirety of the universe.

Don't Toss Your Eclipse Glasses — Give Them a Second Life Instead

You probably have several pairs of eclipse glasses left over from the big total solar eclipse. Don't trash them — recycle, reuse or donate them instead.

Spectacular Solar Eclipse Leaves U.S. in Awe

The first total solar eclipse to cross the United States in almost 100 years leaves the country mesmerized.

An App for Visually Impaired People to Experience the Total Solar Eclipse

After all, it's not just the light that changes when the moon passes in front of the sun.

NASA Gets Ready to Punch an Asteroid in 2022 With DART Mission

And don't worry. Even if NASA misses, we'll be fine.

Small Towns Brace for Big Eclipse Crowds on Aug. 21

Small towns in Idaho, Nebraska and Illinois are trying to figure out how to handle an unknown number of eclipse-trippers. Estimates range from 40,000 to 80,000 visitors.

Moon Base Builders Rejoice: More Water in the Moon Likely

All of a sudden that longed-for moon base doesn't seem quite so far-fetched.

What Does a Total Solar Eclipse on Earth Look Like From Space?

Check out this video of what astronauts in space see as the shadow of the moon crosses our planet.

Total Solar Eclipse on Aug. 21, 2017: When, Where and How to See It

The total solar eclipse will be visible across North America on Aug. 21. Here's some information on how to view it safely, and what scientists may learn from it.

Uranus' Magnetosphere Is Pretty Strange

Everyone's favorite ice giant is weird in more ways than one.

Ancient Impacts Blasted Out Giant Sideways Tornadoes, Shaping the Surface of Mars

Brown University researchers have found evidence that in its distant past, Mars experienced 500-mph cyclones that rolled sideways across the planet's surface.

Triple Star System Could Be a Stellar Cocktail Shaker for Life

Astronomers have discovered a life-giving chemical in a star system located 400 light-years away. Now we just have to wait and see what arises from the cosmic mix.

New Juno Data Reveals Jupiter Is Much More Complicated Than Expected

New Jupiter information gathered by NASA's Juno space probe is in, and it reveals that the solar system's biggest world has surprising features that may alter our concept of how gas giants work.

'Steve' Lights Up Night Sky and Puzzles Astronomers

A beautiful ribbon of light in the nighttime sky is generating a lot of talk — and some mystery, too.

Building Sand Castles on Titan Would Be As Awesome As It Sounds

The strange forces at work on Saturn's largest moon would make for some sweet sand castles.

This Is How We'll Detect Life on Distant Exoplanets

We might be only a few years away from seeing whether potentially habitable worlds are inhabited. How cool is that?

Mars Has a Magnetosphere Problem. Inflatables Could Help

And solving that issue could go a long way toward making our planetary neighbor habitable.

If Your Laptop or Phone Keeps Crashing, Maybe Blame Cosmic Rays

Energized subatomic particles bombarding Earth from outer space can cause the electronics inside laptops, cell phones and other devices to crash.

NASA Announces New Solar System Packed With Seven Planets

Say hello to the newly discovered TRAPPIST-1 system, which is just 39 light-years away and filled with seven Earth-like planets.

Milky Way, How Do You Zip Through the Universe Like That?

Scientists have a new idea, and it has to do with gravitational attraction and repulsion.

Mark Your Calendars for These 2017 Space Events, Astronomy Fans

A total solar eclipse and a comet flyby are on the list of fascinating astronomical happenings 2017 has in store.


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