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

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

The Sun is a powerful, awe-inspiring force at the center of our solar system. Its brilliance lights up our sky and sustains ...

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

The astronomers observed hot minerals just beginning to solidify – the first specks of planet-forming material, the ...

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

Earth's famous Hubble Telescope has just revealed the first images of a mysterious interstellar object racing through our ...

The solar system consists of eight planets, several dwarf planets, hundreds of moons, and billions of asteroids, comets and meteoroids. The exact boundaries of the solar system ar ...

The photos reveal a bright and well-developed coma, the cloud of gas and dust surrounding the comet's nucleus, with striking ...

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

Despite the powerful telescopes that modern astronomers have to work with, the distant reaches of the Solar System are still ...

A newly found icy object, Ammonite, may be a 4-billion-year-old fossil from the Solar System’s edge—and it’s casting doubt on ...