James Webb is now slated for a 2021 launch—only a bajillion years late.
New Horizons scientist Leslie Young discusses what to expect from the flyby on Tuesday, and the 28-year wait leading up to it
Happy birthday to the best space telescope ever! Love, PopSci.
A gallery of photos, visualizations, and other pictures of outer space.
A Gallery Of Photos Curated By The Person Who Made Most Of Them
In the December 1980 issue of Popular Science, a 38-year-old theoretical physicist answers the ultimate question about the universe.
Introducing the High-Definition Space Telescope
There's still more to explore after Pluto.
Otherworldly desktop backgrounds.
Seeking a distant pale blue dot
Confirming hints picked up by the Hubble just a few years ago.
Mars is at its closest and clearest right now. You know you want to look at it.
With a view 100 times larger than Hubble's, the WFIRST scope could discover thousands of exoplanets and millions of galaxies
The James Webb Space Telescope has an ever-expanding timeline—and projected cost.
Hubble spots the most distant galaxy yet
Teach a computer to see and it'll work for a lifetime
I is for interstellar.
This summer, the mission may get funding to travel to a mysterious rock at the edge of the solar system
Short answer: They create a beautiful swirling mess.
With no plans for future upgrades, the telescope faces a fiery end
Figuring out if conditions are right for life on Jupiter's icy moon
Stranger worlds to come
But more importantly, we know a bit more about why the galaxy is the way it is.
Now it's ready for the final tests before launch in 2018