Our own planet represents a tiny fraction of the peculiar phenomena that can be found lurking throughout the cosmos, and ...

The Universe’s Strangest Star came into the spotlight ... and periodic brightness changes due to factors like orbiting ...

If the object really is Planet Nine, it would be larger than Neptune and exist 700 times further from the sun than Earth.

Astronomers have discovered that "super-Earth" planets may exist on wider orbits than previously thought — and this implies these rocky, or "terrestrial," worlds are far more common than was suspected ...

According to reports, scientists from NASA are preparing to make an important announcement after the James Webb Space ...

And it had traveled from somewhere far beyond our galaxy.

Over the past decade or so, astronomers have speculated about the characteristics of rogue planets in the Milky Way galaxy. These "free-floating" worlds don't orbit stars, but instead roam the ...

We currently know of more than 5,800 planets beyond the solar system, but we've only found the tiniest fraction of the exoplanets that astronomers think lie elsewhere in the universe.

It is rare to find brown dwarf stars orbiting in pairs, and this pair has an even more unusual exoplanet companion ...

But soon we will have a chance to spot one of these strange worlds. Pluto is undoubtedly the most famous of all the dwarf planets, because it was once considered part of the main lineup of planets ...

What if we spend decades building advanced telescopes to search for life on other planets and come up emptyhanded? A recent study exploring what we can learn about life in the universe -- even if ...