Exoplanets are planets that orbit stars other than the sun and thus exist outside the solar system. The word "exoplanet" ...

A star and its planets form when a cloud of gas and dust collapses in on itself somewhere in space. The cloud then forms a ...

Of thousands of known exoplanets, only a handful orbit their star “backwards”. Now one has been found where it’s unclear how it started.

A new catalog of potentially habitable exoplanets provides the framework for future observations in the search for alien life ...

For students at the University of California, Santa Cruz, fog is an all-too-familiar dynamic that shrouds and ebbs from campus over the course of a day. But while working toward his Ph.D. in astronomy ...

Thousands of planets have been discovered beyond our solar system, offering clues to where life might thrive and whether ...

Any water present on a planet orbiting here can remain liquid, given the right atmospheric pressure. On planets orbiting close to their respective suns, surface water evaporates into space.

Add Yahoo as a preferred source to see more of our stories on Google. In our solar system, Earth is one of but eight planets – nine, if you really want to count Pluto – and the only one remotely ...

Most exoplanet hunters chase biosignatures the way bird dogs chase the scent of a quail. But in a talk at the European Astrobiology Institute’s recent BEACON 25 conference in Reykjavik, astrophysicist ...

The number of rocky extrasolar planets being discovered continues to increase, but so too does the apparent diversity of such worlds.

Buckle up for a mind-bending trip across real exoplanets that make sci-fi look tame—these alien worlds beyond our solar system actually exist.

Add Yahoo as a preferred source to see more of our stories on Google. Astronomers have narrowed the search for extraterrestrial life from thousands of distant worlds down to just a few dozen promising ...