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

The James Webb Space Telescope and its legacy partner Hubble will hunt for a rocky exoplanet with air around a red dwarf star ...

A passing star may have kicked the weird moons of giant planets like Jupiter and Saturn into place, new research suggests.

PT5 will only be in Earth’s orbit for a few weeks, from Sept. 29 until Nov. 25, but will remain close for a few months ...

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

See how our seasons come from Earth's tilt and yearly loop around the sun, which changes the ice cover, vegetation, and ...

For almost two months, from 29 September to 25 November, Earth will have two natural satellites, astronomers have announced.

Astronomers have discovered an enormous exoplanet in the Great Bear constellation. The newly identified planet is referred to ...

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

It has a mass as much as 11 times that of Jupiter, orbits its star in 14 years and has a temperature of no more than minus ...

Researchers from the Nicolaus Copernicus University, along with international collaborators, discovered a massive exoplanet ...

A small asteroid called 2024 PT5 will temporarily orbit Earth this fall. Here's what it looks like and whether it will be ...