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 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
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.