How does a star affect the makeup of its planets? And what does this mean for the habitability of distant worlds? Carnegie's ...

Scientists have discovered a rogue planet roaming the Milky Way after combining observations from Earth and a space telescope ...

Thanks to the discovery of thousands of exoplanets to date, we know that planets bigger than Earth but smaller than Neptune ...

Most of the planets we’ve identified are in orbit around stars and formed from the disks of gas and dust that surrounded the ...

Journey beyond the asteroid belt to explore the solar system's majestic giants and mysterious outer reaches. We break down the science of Jupiter's eternal storm, Saturn's iconic rings, and the frozen ...

Astronomers have finally weighed a wandering “rogue” planet, uncovering a Saturn-mass world flung into the galaxy after a ...

An old white dwarf, LSPM J0207+3331, 145 light-years away, is still consuming metal-rich planetary debris. Your neighbors may be driving up your utility bill—watch out for this sign With the penny ...

Technically, the sun is a G-type main-sequence star — specifically, a G2V star. The "V" indicates that it is a dwarf, Tony ...

There is so much to see in the night sky tonight, here's what you can look forward to. Look to the east roughly two hours before midnight tonight to see a bright waning gibbous moon, now ...