James Webb is now slated for a 2021 launch—only a bajillion years late.
Confirming hints picked up by the Hubble just a few years ago.
The James Webb Space Telescope has an ever-expanding timeline—and projected cost.
I is for interstellar.
This summer, the mission may get funding to travel to a mysterious rock at the edge of the solar system
The ability to gather more information means we'll spend more time sifting through it.
An excerpt from Spaceman, a memoir by astronaut Mike Massimino
There's still more to explore after Pluto.
This year's missions to the outer solar system are set to shake up the planetary family tree
Spaceman documents Mike Massimino's unlikely journey from fire inspector's son to elite astronaut
You can't see it—but Hubble can.
A Gallery Of Photos Curated By The Person Who Made Most Of Them
But more importantly, we know a bit more about why the galaxy is the way it is.
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.
Otherworldly desktop backgrounds.
A rare galaxy formation gives glimpses into the early universe
Megapixels: Binary stars are at the heart of this celestial crustacean.
It contains a whopping 665 million pixels.
Introducing the High-Definition Space Telescope
Hubble Telescope will investigate further
See this interstellar blood bath in all its glory detail.
New Horizons scientist Leslie Young discusses what to expect from the flyby on Tuesday, and the 28-year wait leading up to it