The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

Our modern era of space observation and exploration deepens our connection with the universe—and with each other. When NASA ...

A super-Earth planet that dips in and out of its star's habitable zone has been discovered just 19.7 light-years away.

New James Webb Space Telescope observations of a star cluster called NGC 346 are shedding light on how, when and where planets formed in the early universe.

"This agreement represents a significant milestone for Planet; it is our largest contract to date and is a major step forward ...

Certain extreme planets are called ultra-short period objects if they're very close to their stars and orbit them in mere hours, like K2-22b.

Feb. 4, 2025 — Using data from the European Space Agency's Gaia mission, scientists have found a huge exoplanet and a brown dwarf. This is the first time a planet has been uniquely discovered by ...

A planetary alignment, or a "planet parade" according to the internet, will grace our night sky just after dusk, according to ...

Astronomers mistook a car SpaceX blasted into space years ago as an asteroid. The brief mix-up highlights the sometimes ...