Meghan Bartels

Two NASA astronauts will conduct a spacewalk previously scheduled for Tuesday (Nov. 30) on Thursday (Dec. 2) after the agency evaluated the risks posed by space debris.

A year later, scientists and Puerto Ricans are still reeling from the loss of the iconic Arecibo radio telescope.

NASA's most beloved space telescope is nearly back to normal.

This bizarre world appears to be the second-hottest known exoplanet as well.

Just because a spacecraft is sent to study the moon doesn't mean it can't do a little extra skywatching now and then.

NASA's Mars helicopter Ingenuity has aced yet another Red Planet flight, the little chopper's 16th sortie.

For billions of years, chaos and the laws of physics have governed our solar system; next year, humans will take the reins and purposefully, in a calculated strike, adjust the orbit of an asteroid.

So you've heard that an asteroid could slam into Earth wreaking all sorts of havoc, but just how many space rocks out there threaten our planet?

The roster for SpaceX's next NASA launch to the International Space Station is complete.

The seven astronauts currently living and working on the International Space Station were forced to shelter in their transport vehicles when the station passed uncomfortably closed to orbital debris.

Someday, tucked away gathering dust in a nondescript warehouse, there will perhaps be a spacecraft waiting to be called to the launch pad, even as its builders pray it never flies.

Jupiter has been taking a beating lately.

NASA wants you to get excited about the nightmare world next door.

NASA may be homing in on the glitch that kept a massive solar array on its new asteroid-bound spacecraft from properly deploying.

The sun is waking up — and making sure we all know it.

NASA has lofted countless spacecraft into the solar system, but a mission launching in late November will attempt a unique feat: to slam into a tiny asteroid and slightly speed up its orbit.

A powerful solar storm could interfere with power grids, satellites and radio signals — although it might also have sent the beautiful northern lights incredibly far south.

Be grateful you weren't in what is now Chile's Atacama Desert 12,000 years ago.

It's been a busy few days for our sun, which has produced three of the outbursts that scientists call coronal mass ejections since Monday (Nov. 1).

NASA is still working to understand a glitch that took instruments on a venerable space observatory out of commission.

Stellar explosions are messy affairs, so two consecutive supernovas in the same galaxy are bound to leave a mark.

NASA's Mars helicopter is ready to make its first flight attempt after a two-week communications blackout caused by the sun's being directly between Earth and the Red Planet.

The risk of collisions in space, the fate of the United States in orbit after the space station retires and continuing debates over NASA's path back to the moon dominated a two-hour hearing.