Analysis of an ancient meteorite suggests that rocky planets both near and distant from the sun may have formed at the same ...

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

Observations of the young HOPS-315 star system show an environment analogous to what our own nascent Solar System would have ...

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

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

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

Just the third-ever confirmed interstellar object has been detected in our solar system. Here's what we know. (Spoiler: It's ...

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

KQ14, nicknamed "Ammonite", was discovered using the Subaru Telescope and is a highly elliptical object with a perihelion and ...

Solar System Planets. Astronomy articles on the eight planets, plus the two dwarf planets, Pluto and Eris. Great pictures of everything in the solar system. Updated daily.