Today (September 23rd) is the day Neptune was discovered. While multiple scientists and astronomers were calculating the size ...

Add Yahoo as a preferred source to see more of our stories on Google. An artist's illustration of a hot, Neptune-size alien planet. Warm Neptune-size exoplanets are not nearly as common as ...

An international team of astronomers reports the detection of two new exoplanets orbiting a bright star known as TOI-5126, using NASA's Transiting Exoplanet Survey Satellite (TESS). The newfound alien ...

As planet-hunting scientists find more and more planets, they've encountered some puzzles. One of them concerns the lack of Neptune-size worlds orbiting close to their stars. Astronomers think that ...

Scientists have identified a new kind of planet- an ‘ultrahot Neptune’, or a giant exoplanet that orbits its star 23 times closer than Mercury orbits our sun. Current estimates say that around 1 in ...

A team working with data from the dearly departed Kepler space telescope has reported a possible moon orbiting an exoplanet some 5,000 light years away. It falls somewhere between the size of Earth ...

Astronomers have uncovered a fascinating new exoplanet, TOI-5734 b, located roughly 106 light-years away from Earth. The planet, discovered through data from the Transiting Exoplanet Survey Satellite ...