From Viking to Perseverance, scientists have spent decades chasing chemical hints that could point to life beyond Earth.

The interstellar visitor Comet 3I/ATLAS passed Earth with Harvard astrophysicist Avi Loeb saying it could be an alien probe.

Looking ahead, the comet will pass roughly 33 million miles from Jupiter in March 2026. Loeb noted the scientific value: monitoring 3I/ATLAS with the Juno spacecraft could reveal unusual activity, ...

The vast silence of the cosmos was momentarily interrupted on Friday as a mysterious celestial traveller reached its closest ...

On Wednesday (Dec. 17), this particular Starlink suffered an anomaly that caused a loss of communication with the ground and an unscheduled venting of its propulsion tank. The satellite is now ...

A Harvard University astrophysicist has sparked a furious debate by warning he cannot rule out that extraterrestrials are ...

An instrument aboard NASA’s Europa Clipper spacecraft captured rare ultraviolet observations of an interstellar comet while Earth-based telescopes were blinded by the Sun. The spacecraft’s unique ...

A Harvard University astrophysicist has ignited intense debate after saying he cannot rule out the possibility that ...

Robotic space probe Voyager 1, the most distant object ever sent from Earth, will reach one light day away from Earth next year, a feat that has taken almost half a century to achieve.

A mysterious guest from the deep cosmos, 3I/ATLAS, has sparked a fierce debate: could its fragments actually reach us?

As number of lunar satellites soars, sites will be marked out where defunct hardware can be crash-landed ...

Harvard astrophysicist Avi Loeb asks whether interstellar comet 3I/ATLAS could shed cyanide debris towards Earth, while ...