The interstellar comet 3I/ATLAS reaches its closest point to Earth on Dec. 19, allowing close study with no threat to the planet.

With one of NASA's most data-rich Martian orbiters of the 21st century in distress, now is as good a time as ever to remember ...

He highlighted several other features he considers unlikely for a natural object, including the comet's trajectory . Loeb ...

NASA has lost contact with its MAVEN spacecraft that launched from Florida and has been orbiting Mars for more than a decade.

In theory, leaner NASA oversight, greater use of off‑the‑shelf hardware and narrower science goals can cut costs while ...

NASA scientists are working to regain contact with a spacecraft that has orbited Mars for more than a decade. The space ...

NASA is probing a sudden loss of contact with its MAVEN Mars orbiter after rare 3I/ATLAS data, raising questions about timing ...

NASA has lost contact with its MAVEN spacecraft that has been orbiting Mars for more than a decade. Here's what we know.