The universe’s first rocky planets may have gotten their start astonishingly early — perhaps only 100 million years after the ...

Astronomers at Lund University in Sweden have found evidence of exocomets—comets in other solar systems—orbiting a young star ...

Five planets will become visible in the September night sky, creating a planetary viewing opportunity for skywatchers around ...

Heading into the start of fall, it’s time to check the calendar for some astronomical events. Related video above: New images ...

September ushers in the start of fall.

Planets form from disks of gas and dust around young stars, but the gas needed for growth does not last forever. New ...

Some of the brightest planets are visible in our night sky, and look for the Moon to shine near them throughout the month of ...

One exploded star left behind six Earth masses of rocky planet material just 100 million years after the Big Bang, a ...

Jets, winds, and blasts of light tend to get rid of the building blocks of planets before they have a chance to assemble.

September brings the autumnal equinox, signaling the official start of fall in the Northern Hemisphere.

Astronomers have discovered two exoplanets orbiting a red dwarf 337 light-years away. One could be a scorching lava world, ...