"This is the most exciting and fascinating discovery in substellar astrophysics in decades," an astrophysicist said.

At 6 light-years from Earth, a discovery is shaking up astronomy. A new planet, Barnard b, has been detected orbiting a red ...

In 1995, Caltech researchers at the Institute’s Palomar Observatory first observed what appeared to be a brown dwarf orbiting Gliese 229 – a red dwarf star located about 19 light-years from Earth.

Catch some shooting stars, get in a glimpse of the fading Comet Tsuchinshan-ATLAS, and see Venus mingle with Antares in the ...

Oddball Stellar Duo Creates Spectacular Fireworks Located about 700 light-years from Earth, R Aquarii is one of the closest stars known to undergo massive violent eruptions that spew out huge ...

A rare comet is still glowing over Ohio. Here's how to see it before it's gone, and won't return for 80,000 years.

Coloradans looking to the west in the early evening hours this week have the chance of spotting an ancient marvel not seen ...

The NASA/ESA Hubble Space Telescope has provided a dramatic and colorful close-up look at one of the most rambunctious stars ...

Scientists say a celestial object discovered decades ago is actually twins orbiting each other. The discovery was published ...

Along the lunar orbital path, the point of closest proximity is known as perigee, which is when the moon is, on average, ...

Astronomers resolve longstanding mystery of Gliese 229B's dimness, despite its considerable mass. A Caltech-led team ...