NASA has discovered an interstellar comet that's wandered into our backyard. The space agency spotted the object with the sky ...

NASA is preparing to map the boundary where the solar wind meets interstellar space in its Interstellar Mapping and Acceleration Probe, set for launch sometime after September of this year. IMAP ...

There may be another world lurking between the orbital lines of our solar system. Astronomers in Japan have published their theory of an “Earth-like planet,” dubbed Planet Nine, that’s ...

The comet had been traveling towards us from the outer reaches of the solar system, and was first sighted by the Zwicky Transient Facility (ZTF) at the Palomar Observatory, near San Diego in ...

The distance of the Oort Cloud to the interior of the Solar System. The scale bar is in astronomical units, with each set distance beyond 1 AU representing 10 times the previous distance.

Astronomers have discovered a rare in-sync solar system with six planets moving like a grand cosmic orchestra, untouched by outside forces since their birth billions of years ago. The find ...

A giant might lurk in the spherical region of ice and rock at the farthest reaches of our solar system. The odds aren't great, though.

The Best Telescopes For Observing Our Solar System and Beyond See the stars like you’ve never seen them before. By M. Josh Roberts Updated: Jun 21, 2023 5:01 PM EDT ...

The location of the solar system's outer boundary is a point of contention among astronomers. There are three possible candidates, which "all have merit." But which one is best?