After decades of searching, astronomers may have finally stumbled upon the first moon known to exist beyond our solar ...

After decades of searching, astronomers might finally be on the verge of discovering thefirst confirmed exomoon, a natural ...

For decades, the search for alien life has revolved around a narrow ring around stars where liquid water could exist on a planet’s surface. That “habitable zone” remains important, but astronomers are ...

Exoplanets are planets outside Earth's solar system. In 1995, a gas giant named 51 Pegasi b, which orbits a star similar to Earth's sun, etched its name in history as the first exoplanet ever ...

Three astronomers last week proposed expanding the official definition of a planet to encompass worlds orbiting stars other than our own, a nuance not currently included in the formal definition of ...

Astronomers have detected the most promising signs yet of a possible biosignature outside the solar system. The most likely reason (when combined with other observation) for seeing 1000 times more of ...

A tiny star is making big moves — whether its accomplice likes it or not. Astronomers have spotted a star just a fraction the mass of the Sun crashing through the Milky Way at an unbelievable pace.

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Astronomers have discovered two new exoplanets that are similar to other worlds found in the ...

Using the Transiting Exoplanet Survey Satellite (TESS), an international team of astronomers has detected a new exoplanet orbiting a nearby star. The newfound alien world, designated TOI-2431 b, is ...

No planets cooler than about 35.33 degrees Fahrenheit had ever been detected. An exoplanet discovered in 2020 contains the coldest temperatures ever measured on a planetary body, according to ...