About 50 light-years from Earth, a gas giant about half the mass of Jupiter orbits a sunlike star. The discovery of Pegasi 51 b ushered in a new era of exoplanet research.

Comprehensive guide to November 2025 night sky events, including visible planets Saturn, Jupiter, Venus and Mercury, the year’s brightest supermoon and peak meteor showers.

Four hundred light-years away, a world twice the size of Jupiter glows like a forge. Now, thanks to the James Webb Space ...

Harvard astronomer Avi Loeb has argued at length that 3I/ATLAS — the third-ever interstellar object ever detected, currently ...

Why do all planets in our solar system orbit the Sun the same way? This documentary unravels the cosmic forces, from the ...

Scientists found two Earth-sized planets and a third candidate orbiting a nearby double star system, TOI-2267.

When evaluating possible planets out of the thousands out there, explained Prof. Bean, scientists look for liquid water as a ...

A distant gas giant the size of 10 Jupiters is now the first planet outside Earth's solar system to be mapped in three ...

The Habitable Worlds Observatory (HWO) is slated to be the next Great Observatory for the world. Its main focus has been ...

Our solar system and galaxy were the first objects of study for what was going on in the universe. Among the various ...

Down here on Earth we don't usually notice, but the Sun is frequently ejecting huge masses of plasma into space. These are ...

In a discovery that could rewrite what we know about where water comes from and the building blocks of life in the solar ...