Originally launched in 1977 to explore the outer planets, Voyager 1 transformed scientists' understanding of Jupiter and ...

Strange interstellar comet speculated to be alien spacecraft is older than Solar System - Scientists say comet represents ...

When Comet 3I/ATLAS entered our solar system last year—only the third known interstellar object to do so—astronomers took notice. When astronomers first discovered 3I/ATLAS in July 2025, the icy ...

For obvious reasons, the Sun’s influence weakens as you get closer to the edge of the solar system. But things might be a lot ...

A comet born around another star crossed into our solar system, accelerated to roughly 153,000 miles per hour at its closest ...

Even at this early stage in our spacefaring age, humanity has already begun sending probes that will eventually reach other solar systems, even if that was not their original intention. Five robotic ...

Nasa is rushing to find a solution to prevent its first interstellar spacecraft from running out of power. Voyager 1, which launched in 1977, suffered a drop in power levels that forced mission ...

Juice observed 3I/ATLAS during perihelion, when Earth-based telescopes could not. Spectroscopic observations measured water ...

Sometime in 2029, the European Space Agency is scheduled to launch its Comet Interceptor Mission. The Interceptor will wait for a long-period comet to arrive in the inner solar system then set off on ...

The group leading the charge in the search for extraterrestrial life has given the all clear: An interstellar comet looks to be completely natural and free of any alien tech. The SETI Institute said ...

A comet hurtling through the solar system from interstellar space is exactly what it appears to be, NASA officials said Wednesday, moving to quash a wave of online speculation. At a news conference, ...