NASA says a group of scientists may have discovered signs of a new planet beyond the Milky Way. The potential discovery could be the first-ever planet found in another galaxy. The potential planet, ...

A team of astronomers led by scientists at the California Institute of Technology (Caltech) has discovered the three smallest confirmed planets ever detected outside our solar system. The three ...

Astronomers have spotted tantalizing signs of a planet in a star system outside the Milky Way, which, if it's confirmed, would be the first ever found in another galaxy. The discovery, reported in a ...

There’s something about comparing the sizes of unthinkably large objects that’s endlessly intriguing. Looking at a comparison of all the various sizes of stars in the universe, for example, makes for ...

The milestone highlights the accelerating rate of discoveries, just over three decades since the first exoplanets were found. The official number of exoplanets — planets outside our solar system — ...

In a recent paper, Harvard researchers found that raindrops are remarkably similar across different planetary environments, even planets as drastically different as Earth and Jupiter. Understanding ...