But we're not quite ready to trash general relativity.
Looking at the stars takes you back through time. All the way to the beginning.
Astrophysicists measured all of the lights.
It's a dark period in the Universe's early days.
What we know about the mysterious life cycle of a black hole.
When the stars align, you can zoom way in.
What's the matter with dark matter?
The phrase originated 69 years ago today.
Meanwhile in space: moon activity and satellites watching satellite launches .
It's just plane confusing.
In the December 1980 issue of Popular Science, a 38-year-old theoretical physicist answers the ultimate question about the universe.
And it's much bigger than we expected.
A gallery of photos, visualizations, and other pictures of outer space.
Astronomers catch a galaxy magnifying and splitting the light from a supernova
Where have they been hiding?
1.2 million galaxies
And it's giving Einstein a run for his money
What does that mean for the search for alien life?
Earth life: an early arrival at the party
Introducing the High-Definition Space Telescope
The biggest thing in the Universe is a cosmic hole
The Dawn spacecraft arrives at Ceres this March, and it could be the most surprising space mission in decades
Calling all astronomers, stargazers, and Neil deGrasse Tysons!