Free-floating, planetary-mass objects that are just drifting carefree through the galaxy, untethered and starless, appear to be able to generate their own systems of moons, like a planetary system on ...

In a breakthrough for exoplanet science, astronomers have discovered three Earth-sized planets orbiting both stars in a ...

Using the James Webb Space Telescope (JWST), astronomers have peered deep into one of the Milky Way's most radiation-intense star-forming regions, revealing that Earth-like planets can form even in ...

An international team of scientists has announced the discovery of three Earth-sized planets orbiting within the binary star system TOI-2267, located approximately 190 light-years from Earth. An inter ...

"At this point, we can rule out TRAPPIST-1d from a list of potential Earth twins or cousins." There's bad news for our hopes of habitable planets existing around TRAPPIST-1, with the James Webb Space ...

We all need some space sometimes—but it's harder to find than you might think. How far into our universe do we have to go to reach somewhere truly empty? Our first stop is the International Space ...

One of the boldest dreams in modern astronomy is the search for Earth-like worlds beyond our solar system. These exoplanets may hold oceans, rocky ground, and even atmospheres rich in oxygen or ...

How many dwarf planets are there in our solar system? The recent discovery of 2017 OF201 makes the tally anywhere between five and 18, plus hundreds of potentially undiscovered ones, depending on whom ...