Exoplanets like Earth have been discovered but not all Earth-like planets are equal when it comes to alien life.

Some 350 light-years away, the V1298 Tau system features an infant sun-like star, just 23 million years old, orbited by four ...

In a blow to anyone dreaming that complex life may exist elsewhere in the universe, a new study suggests we're unlikely to ...

A decade of observations of four planets around the young planetary system V1298 Tau revealed a rare, long-sought missing ...

The star system V1298 Tau reveals that many planets begin as large, low-density worlds that slowly shrink and shed their ...

Planets larger than Earth but smaller than Neptune are the most common kind in the galaxy, but because our solar system lacks such a planet, scientists don’t know much about how they form. Astronomers ...

The Hubble Space Telescope has captured a spectacular new image of the largest and most unusual protoplanetary disk ever ...

While most planets that we are familiar with stick relatively close to their host star in a predictable orbit, some planets seem to have been knocked out of their orbits, floating through space free ...

Most planetary systems contain worlds larger than Earth but smaller than Neptune, and the low-density planets around one ...

Across the Milky Way, planets slightly larger than Earth but smaller than Neptune appear around most stars. Yet our own solar ...

Far from the Sun’s heat, orbiting the outer planets of the solar system, are moons with oceans of liquid water beneath their frozen surfaces. Keith Cooper finds out how planetary scientists are ...