What is going on with my moon?
The first time we've caught a baby black hole in action.
Short answer: Because we changed the definition of the word “planet” to better fit its meaning.
What this new research means for radio astronomy
"Seeing color in a nebula from a garden in San Francisco? That's pretty cool."
Gravitational wave detection is going through an even tighter squeeze.
Time for a new plan.
Mars is at its closest and clearest right now. You know you want to look at it.
Step one: realize we're not alone.
Also in space: A neighborhood of black holes, a new (and old) reason to study Venus' clouds, and the end of the Lunar XPrize.
Though commercial operations are at least a decade away, career opportunities in asteroid mining are here today, experts say.
And its clouds may be made of gemstones
The fastest, largest observations of the Universe, ever
Hubble spots the most distant galaxy yet
It's exactly what we asked Santa for
Introducing the High-Definition Space Telescope
With no plans for future upgrades, the telescope faces a fiery end
Capturing a meteor shower takes serious photographic skill, but the results are worth the effort.
It's the farthest object we've ever spotted in our neighborhood.
7 vehicles that will carry humanity into orbit and beyond very soon
The company will not meet its 2017 deadline.
Europa, the outer solar system, and a lot of questions.
Step 1 toward colonizing the red planet