This Super-Earth's lead-like density puts it in a very exclusive club. It's twice Earth's density of 5.5 grams per cubic ...

Astronomers have uncovered a fourth planet in the Kepler-51 system, using the James Webb Space Telescope (JWST). This strange new world adds to a group ... This unexpected early transit puzzled the ...

Scientists using the powerful James Webb Space Telescope sought to observe a planet beyond our solar system (an exoplanet) ...

CAPE CANAVERAL, Fla. (AP) — NASA's stuck astronauts mark six months in space with two months to go before returning to Earth.

Scientists found a new planet in the Kepler-51 system. The planet is called Kepler-51e. It helps explain why other planets in ...

"If trying to explain how three super puffs formed in one system wasn’t challenging enough, now we have to explain a fourth ...

Astronomers discover a fourth planet in Kepler-51, challenging planetary formation theories with new questions.

The discovery of Kepler-51e sheds light on the unusual transit patterns of the system's existing super-puff planets.

Astronomers using the James Webb Space Telescope report the discovery of a planet orbiting within the habitable zone of ...

How many exoplanets are in the cosmos and what can they tell us about planetary formation and evolution? This is what a ...

An unusual planetary system with three known ultra-low density 'super-puff' planets has at least one more planet, according to new observations.