If an alien in the Alpha Centauri star system were craving pizza, it would take tens of thousands of years to deliver it ...

Laser sail propulsion is an idea that won't go away. By aiming powerful Earth-based lasers at tiny spacecraft with light sails, tiny spacecraft can be accelerated to near-relativistic speeds without ...

NASA has turned off Voyager 1’s Low-energy Charged Particles instrument to conserve dwindling power, ensuring the probe continues its interstellar mission. The 1977-launched spacecraft, now over 15.8 ...

The farthest spacecraft from Earth has shut down another instrument in the hopes of buying time for an upgrade that could ...

The probe launched almost 50 years ago and is the farthest human-made object from Earth. Shutting down one of its scientific ...

Measurements of this interstellar comet’s molecular makeup show an excess of heavy water molecules that is dramatically ...

New research reveals that the mysterious interstellar visitor 3I/ATLAS comes from a very cold alien environment, new research ...

A telescope tracked an alien comet after its solar pass, and the chemistry it found inside was nothing like what came before.

Light travels at a whopping 299,792 kilometers per second. It zips from Earth to the Moon in a heartbeat, clears the orbit of ...

NASA has made the difficult decision to shut off another instrument on Voyager 1. Here's what's next for the furthest manmade ...

On April 17, engineers at NASA’s Jet Propulsion Laboratory (JPL) in Southern California sent commands to shut down an instrument aboard Voyager 1 called the Low-energy Charged Particles experiment, or ...