It was almost 100 years ago that Clyde W. Tombaugh discovered Pluto. That was the last planet found until 1992, when humans found another one. But this new planet wasn't in our solar system—it was ...

Scientists have identified three Earth-sized planets orbiting two stars in the TOI-2267 system. Remarkably, planets transit around both stars — a first in astronomy. The system’s compact, cold nature ...

An international team of researchers has just revealed the existence of three Earth-sized planets in the binary stellar system TOI-2267 located about 190 light-years away. This discovery, published in ...

The number of confirmed planets outside of our solar system—known as exoplanets—has risen to 6,000, NASA has said. There is huge variety across these distant worlds, the space agency says, with ...

In a stellar nursery 460 light-years away, astronomers sharpened old ALMA data and spotted crisp rings and spirals swirling around 27 infant stars—evidence that planets start taking shape just a few ...

As J.R.R. Tolkien wrote in The Fellowship of the Ring, “Not all those who wander are lost.” But in the case of planets, it’s possible that most of them are. Rogue planets—planets that are adrift in ...

Here's everything you need to know about this week's parade of seven planets. Getty Images A seven-luminaries-deep parade of planets will line up and light up the night sky this week, folks. Just ...

If you’re an astronomy buff, you may have heard about the “Parade of Planets” in the night sky this week – all seven planets visible at once in the dusk sky through the end of the month. Viewing ...

A planetary parade is in store for the end of February, just over a month since the last one. If you missed January’s spectacle, make sure you tune in to this one. Here’s what you need to know and how ...

For centuries our solar system was the only planetary system known to humans. We had no proof other worlds existed beyond those in our own cosmic backyard, and we imagined that if other planetary ...