Our Solar System has eight planets, a few dwarf planets and more than 200 moons. But wait. Are you seeing double? Or did ...

For nearly a decade, astronomers have been hunting for a massive, unseen planet lurking on the fringes of our solar system.

So far, searches for the hypothetical Planet Nine have yielded no such world. There are many possible reasons for this, one ...

Jupiter" exoplanet called 2M1207b, precisely 20 years ago this week. This was the first direct visual confirmation of a world ...

The new exoplanet, named TOI-1408 c, is situated about 455 light-years from our solar system and orbits its star in a bizarre ...

A research team led by Lund University in Sweden has discovered a small planet that displays peculiar orbital motion. The ...

Our solar system might still bear the scars from an extremely close shave with an alien star. Such an encounter – the closest pass we know of – would have shaken up objects on the outskirts and might ...

Astronomers have found evidence of a process that supports an alternative, more rapid approach to planetary formation, more ...

Our universe is always being explored, and a recent discovery was made about the catchily named exoplanet HD 189733 b. This ...

Brown, who is among the co-discoverers of Sedna, told the publication, “Some of our earlier hypotheses, before we realized ...

A star’s flyby likely altered the orbits of trans-Neptunian objects beyond Neptune that changes how we view the solar ...

A NASA-developed material made of carbon nanotubes will enable our search for exoplanets—some of which might be capable of ...