The sun erupted with an X-class solar flare on Halloween, and solar activity is expected to remain high through Nov. 3.

New technologies including recoverable satellites and in-orbit space debris recycling could help solve the satellite air pollution problem and prevent a new ecological crisis in the future.

As millions of people around the world celebrate Diwali, the Hindu festival of lights, NASA astronaut Sunita Williams radioed home her share of festive cheer.

The imprecision in the measurements of claimed interstellar fireballs means it is highly likely they originate in the solar system instead, a new study reports.

Thanks to images from various NASA spacecraft, we can get an up-close look at the Jupiter ocean moon Europa long before the agency's Europa Clipper probe arrives.