But we're not quite ready to trash general relativity.
How to make a black hole without a star.
What is going on with my moon?
The Event Horizon Telescope peered into the Messier 87 galaxy.
Visiting the most distant object ever.
What we know about the mysterious life cycle of a black hole.
Nope, not aliens.
Scientists just switched on the Event Horizon Telescope
Like, 100 times more
A recap of Manhattanhenge 2016
Holograms? Alternate universes? Here's what the famous physicist's announcement really means
This summer, the mission may get funding to travel to a mysterious rock at the edge of the solar system
In the December 1980 issue of Popular Science, a 38-year-old theoretical physicist answers the ultimate question about the universe.
The revolutionary explorer gets a life extension
That's three moons down, two to go
Two for the price of one.
There's still more to explore after Pluto.
MU69 is far from your run-of-the-mill solar system object.
After nine years and three billion miles, here's what we're learning from it all
The biggest thing in the Universe is a cosmic hole
Look BE-4 you leap
A total eclipse of the heart
The little white dot is only going to get bigger