ASTRONOMY

NASA / ESA / S. Beckwith (STScI) / Hubble Heritage Team

13 Tips for Stargazing From Astronomers

Even you city dwellers can see some celestial objects using these pro tips.

Look Up Before Sunrise for the Next Month to See 5 Planets at Once

Like celestial Pokémon, this is your big chance to catch them all.

5 of the World's Largest Telescopes—and Their Discoveries

You can visit all of them.

Look Up! The Geminid Meteor Shower Is Here

Sunday and Monday, the Geminid meteor shower rounds out 2015's offering of celestial wonders.

Danielle Futselaar // SETI International

There Is No Alien Megastructure in Our Galaxy After All

Theories that a flickering star was really a structure harnessing energy have been debunked.

Look Up Tonight! The Leonid Meteor Shower Will Blaze Across the Sky

The celestial show occurs every November.

See Saturn's Moon Enceladus From Just 30 Miles Up

While you were trick or treating, Cassini was sending to Earth images from the October 28 flyby of the Saturn moon Enceladus.

NASA Just Sampled an Alien Ocean on a Saturn Moon

Its mission: To make its deepest dive yet through the icy geysers (or “plumes”) of Enceladus’ south pole.

ESA/Rosetta/NAVCAM via Flickr // CC BY-SA IGO 3.0

Scientists Discover Oxygen in a Comet

This is the first time oxygen has been discovered in a cometary coma.

X-ray image of the remnants of SN 1006. Image Credit: Wikimedia Commons // Public Domain

Medieval Supernova Lit Earth’s Skies for Months

Astronomers around the world marveled at the brilliance of the “guest star.”

Astronomers Are Excited About a Strange Flickering Star in Our Galaxy

No one has ever seen a star behave this way before.

On Sunday You Will Be Able to See Uranus

There's Liquid Water on Mars

It's salty and it's flowing right now, they say.

You Can See a Rare Total Eclipse of a Red Super Harvest Moon

The darkened terrestrial disk will be ringed by every sunrise and every sunset in the world, all at once.

Look Up Tonight! It's International Celebrate the Moon Night

Oohing and aahing are optional but recommended.

How Neil deGrasse Tyson Got James Cameron to Edit Titanic—15 Years Later

When the famed astrophysicist pointed out an error in the Oscar-winning blockbuster, Cameron—ever the perfectionist—took action.

NASA's James Webb Space Telescope Releases First Images

10 Misconceptions About Space

No, the Sun isn't actually on fire. Here are a few more myths about space that are ready for debunking.

Smithsonian Institution, Wikimedia Commons // No restrictions

Meet the Woman Who Discovered the Composition of the Stars

When she first finished her revolutionary thesis, Payne was told that the results were "clearly impossible."

Kartik Ramanathan, Flickr // CC BY-NC-NC 2.0

The Best Meteor Shower of the Year Starts Wednesday Night

Some 100 meteors an hour will blaze across the sky tomorrow night. It's going to be the best show in five years.

NASA/JPL-Caltech/LANL/IRAP/U. Nantes/IAS/MSSS

Rover Discovers 'Earth-Like' Crust on Mars

A recent study published in Nature Geoscience details the presence of a potential “continental crust” on Mars.

What Scientists Have Discovered About Pluto (So Far)

Some initial conclusions about Pluto and Charon, its largest moon.

Next Week We'll See Pluto Up Close for the First Time in History

On July 14, the New Horizons probe will be closer to Pluto than New York City is to Hong Kong.

screenshot from "Amazing Sunset Sky Show," NASA ScienceCasts

Look West Tonight! Venus and Jupiter Are in the Process of "Converging"

They're gliding across the sky towards each other all month long.

The Floating Poop Mystery That Has Haunted NASA Since 1969

The astronauts on NASA’s Apollo 10 mission in May 1969 paved the way for a pivotal moment in human history. But in the process, they introduced an entirely new kind of space exploration mystery.

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