The mystery of whether a Manhattan-sized object whizzing through the solar system is an alien probe or simply a comet may be ...

This article was originally published at The Conversation. The publication contributed the article to Space.com's Expert Voices: Op-Ed & Insights. The size of the solar system is defined by the volume ...

Time is running short for scientists hoping to collect data from 3I/Atlas, a massive interstellar object hurtling away from ...

Interstellar comet 3I/ATLAS is drawing global attention for its mysterious path through our solar system, offering rare insights into objects originating beyond the Sun’s gravitational reach.

Interstellar comets like 3I/ATLAS could serve as seeds for giant planet formation, potentially explaining how massive planets form around distant stars, according to BBC and Pfalzner’s research.

Folks, it's official: the object that astronomers recently spotted blowing through the outer solar system came from interstellar space. Yesterday, the intriguing stranger was named A11pl3Z. Now, it's ...

The mysterious cloud of space rocks and debris at the edge of the solar system may have spiral arms, making it resemble a mini galaxy, a new study says. The Oort cloud is a theoretical debris shell at ...

Our sun will run out of fuel in the distant future and become a white dwarf after going through a red giant phase. Astronomers at the W.M. Keck Observatory in Hawaii have discovered a distant ...

The Milky Way and Andromeda galaxies are predicted to collide and merge between 3.9 and 5.6 billion years from now, based on observed relative motion. The merger process will involve multiple ...