The duo conducted a simulation of the solar system and Alpha Centauri that lasted for over 100 million years. It showed that a significant number of objects can reach the solar system from Alpha ...

Astronomers have observed an object that originated from beyond our solar system, thought to be an interstellar comet, speeding through our celestial neighborhood.

Until now, very few massive objects in the solar system have been found beyond the Kuiper Belt. Related: An illustrated diagram of the sun and the planets of the solar system.

Diagram showing the path of A/2017 U1 through the inner solar system. [Diagram: NASA/JPL-Caltech] According to Space.com, when it was first observed, scientists at first assumed it was a comet but ...

A diagram shows the projected trajectory of the interstellar comet 3I/ATLAS, labeled C/2025 N1 here, as it travels through our solar system. NASA/JPL-Caltech ...