The Solar System, home to Earth and countless other fascinating planets and moons, exists within the Milky Way galaxy. But ...

The celestial body's unusual orbit “implies that something extraordinary occurred" in the early days of the solar system—and ...

Evidence that rocky planets beyond Jupiter formed as rapidly, and at the same time, as the inner planets could transform our ...

The newly discovered world — a "sednoid" — challenges what planetary scientists thought they knew about the edge of the solar ...

Images from two different telescopes give astronomers a glimpse at the formation of a "new" planetary system around a star ...

The future of our solar system has long captivated both scientists and stargazers alike. As highlighted in a recent Live ...

Astronomers have discovered the earliest seeds of planets forming around HOPS-315, a baby star located 1,300 light-years away ...

"It is possible that a planet once existed in the solar system but was later ejected, causing the unusual orbits we see today ...

The answers to those questions depend on how we define the death of the solar system.

The star is surrounded by a protoplanetary disk, and this disk is the first evidence of debris condensing into what will ...

International astronomers have for the first time witnessed the birth of a planetary system beyond Earth's sun that could one ...