Trans-Neptunian objects (TNOs) are icy bodies that vary widely in size, from large dwarf planets like Pluto and Eris—each ...

A newly confirmed exoplanet around a nearby sunlike star might be astronomers’ best chance yet to look for life beyond the ...

On this day 35 years ago, NASA's Voyager 1 spacecraft took a picture that changed how we see our planet. The iconic "Pale ...

Using 20 years of data from the Hubble Space Telescope astronomers have discovered that turbulent stars could be corrupting ...

A new study examines how much material from the closest star system to Earth will end up in orbit around the Sun, and how ...

Multiple planets will appear to be aligned in the night sky in a parade of planets throughout February, astronomers say, an ...

These are bodies of ice and rock that orbit the sun well past Neptune and Pluto, and they’re large, all more than 1,000 kilometers wide. In fact, with a width of more than 2,300 km, Eris rivals ...

That is why it is a “sub-Neptune”, a class of exoplanet that does not occur in our Solar System. To reveal its secrets, researchers used the Mid-Infrared Instrument (MIRI) on the JWST and followed the ...

For Neptune, in its wide and distant orbit at about 30 AU, the difference between the perihelion and aphelion is 0.5 AU, according to the Royal Greenwich Observatory. Dwarf planet Pluto ...