We still don't know what the X-37B is doing up there, however.
What looks like a cross between a nebula and a 1980s dance party is something even more astonishing: a view of the locations of DNA and RNA inside a living cell.
From ancient Greece to the age of quantum computers, cryptography continues to keep our secrets safe.
The flawed reactor design that led to a catastrophic meltdown at the Chernobyl Nuclear Power Plant was used in several other places. Some are still operating.
Order sometimes emerges from chaos in turbulent fluid flow. We may finally have a mathematical explanation for why.
A new paper could end up being a big step toward solving one of the oldest unanswered puzzles in mathematics: Is the Riemann hypothesis correct?
DARPA hopes to invent ways to instantly read soldiers' minds using tools like genetic engineering of the human brain, nanotechnology and infrared beams.
The kilogram isn't a thing anymore. Instead, it's an abstract idea about light and energy and fundamental universal constants.
The biggest, most expensive science experiment in the world might be losing all its dark matter. But physicists are looking on the bright side.
Google Earth allows us to track our changing world. By providing powerful geomapping and tagging tools to everyone, anyone can explore and model the Earth like never before.