Confirming hints picked up by the Hubble just a few years ago.
James Webb is now slated for a 2021 launch—only a bajillion years late.
There's still more to explore after Pluto.
Stranger worlds to come
The James Webb Space Telescope has an ever-expanding timeline—and projected cost.
The early solar system was a wild, world-destroying place.
This summer, the mission may get funding to travel to a mysterious rock at the edge of the solar system
I is for interstellar.
Introducing the High-Definition Space Telescope
Kepler and Dawn guzzled through their precious gas for similar reasons.
Spaceman documents Mike Massimino's unlikely journey from fire inspector's son to elite astronaut
You can't see it—but Hubble can.
The ability to gather more information means we'll spend more time sifting through it.
With no plans for future upgrades, the telescope faces a fiery end
A Gallery Of Photos Curated By The Person Who Made Most Of Them
Mirror, mirror, in the clean room
But more importantly, we know a bit more about why the galaxy is the way it is.
The story of heroic fasteners that will get us to the moon and back.
Yesterday's Antares failure was not exactly unprecedented.
A gallery of photos, visualizations, and other pictures of outer space.
The telescope began work 26 years ago today, but getting there wasn't so easy
Now it's ready for the final tests before launch in 2018
A lack of personnel makes the problem more precarious.
300 times the coverage!
Otherworldly desktop backgrounds.
In the December 1980 issue of Popular Science, a 38-year-old theoretical physicist answers the ultimate question about the universe.
A beautiful new image of the aptly named Bubble Nebula
A rare galaxy formation gives glimpses into the early universe
Happy birthday to the best space telescope ever! Love, PopSci.
Megapixels: Binary stars are at the heart of this celestial crustacean.
An excerpt from Spaceman, a memoir by astronaut Mike Massimino
It's surprisingly lacking in heavy elements
It contains a whopping 665 million pixels.
Andromeda in high-def
When it's finished, it'll be the largest in the world, and up to 10x sharper than Hubble
And you thought your home was dusty
In our galaxy, but still far, far away
With a view 100 times larger than Hubble's, the WFIRST scope could discover thousands of exoplanets and millions of galaxies
Ready by 2022
Hubble Telescope will investigate further
The spectacular scope launches in 2019.
But the end is fast approaching.
See this interstellar blood bath in all its glory detail.
The robot's failed mission shouldn't come as a shock.
New Horizons scientist Leslie Young discusses what to expect from the flyby on Tuesday, and the 28-year wait leading up to it
Seeking a distant pale blue dot
When the stars align, you can zoom way in.
It could be the largest moon we've ever seen
With scorching temperatures day and night, WASP-43b ain't no place to live.
Where have they been hiding?
Two stars enter, one star leaves
Hope you're not afraid of heights
It's official: the next big telescope will launch in October 2018
55 million light years away
With an icy heart.
Cyborgs, and interstellar probes, and AI.
Mike Massimino shows me around
And it's giving Einstein a run for his money
Observatories all over the world caught a new kind of collision.
We're going to need some more evidence.
Scientists directly imaged two embryonic exoplanets 370 light-years away.
The Dawn spacecraft arrives at Ceres this March, and it could be the most surprising space mission in decades
This year's missions to the outer solar system are set to shake up the planetary family tree
Who knows what might be lurking on this weird, tiny space rock
Approximately 100 million years before Beyonce was born
Hints of a subsurface ocean of H2O
Neutrinos, meet IceCube.
The Large Magellanic Cloud isn't just a pretty satellite galaxy—it's also a future threat.
The biggest and baddest ground-based telescopes are on their way
Teach a computer to see and it'll work for a lifetime
Complete with tiny laser beams
What did Hubble find on Europa?
Mars is at its closest and clearest right now. You know you want to look at it.
The top 7 explanations for the star's weird behavior, ranked roughly in order of plausibility
Scientists just switched on the Event Horizon Telescope
As black as day.
The traveller (maybe from another star) didn't stay long and it's moving away fast
Despite what Harvard scientists say.
Looking at the stars takes you back through time. All the way to the beginning.
A bigger bang
Breaking down the Mauna Kea controversy.
Almost nothing like it has ever been observed on the red planet before
The ocean-filled moon might hold the life we've long searched for in space. And scientists have one shot to reach it.
The country's longest manned mission is part of their plan for a permanent orbital outpost
Like, can we even do that?
He was excited to test his new camera, but he also captured something totally unique.
"Seeing color in a nebula from a garden in San Francisco? That's pretty cool."
That's three moons down, two to go
So close we might even be able to measure its wind speeds, GJ 1132b is a very important exoplanet
Hubble spots the most distant galaxy yet
Your aurora is showing
New Horizons will soon find out what's up with MU69.
Here are some highlights from its journey
What could darken so much of an 80 million-square-mile storm?
Short answer: They create a beautiful swirling mess.
An interview with Keri Bean, NASA engineer and R2D2's best friend
To Mars or bust
The journey to Mars, told in GIFs