The James Webb telescope has made another stunning discovery -- this time of a massive planet that could potentially sustain ...

Eccentric large planets have chaotic upbringings. During its operating lifetime between 2009 and 2018, Kepler observed around 150,000 stars, looking for the tiny dips in light caused when a planet ...

New Earth-Size Planets Would Be Nothing Like Earth. The relatively nearby worlds zoom around an ultracool star and are probably very different from our lush green planet.

Scientists think that planets form when small space rocks fuse to form bigger rocks until eventually they form a planet that can be about the size of Earth or, if the planetary core is very large ...

The team grouped planets into five different sizes and 17 percent of them, roughly 1 in 6, have a planet 0.8-1.25 times the size of Earth in an orbit of 85 days or less.

Astronomers using ALMA have uncovered how gas and dust in planet-forming disks evolve separately an insight that reshapes our understanding of how different types of planets form. While dust lingers, ...

Certain planets are so close to their star that it takes only a handful of days to make one revolution, compared to the Earth which takes 365.25 days. Others slingshot around their star with extrem.

With both the masses and radii, the densities of the planets are easily calculated. Kepler-36b is very dense: about 7.5 g/cm 3 (7.5 times the density of water), compared to Earth's density of 5.5 ...

Named GJ 1132b, the planet was discovered with an array of six telescopes on three different mountains in Chile. It’s not habitable. The surface is scorched by the parent star — an old, red ...

If you were to compare planet Earth to the Sun, you'd find that you'd have to stack 109 Earths atop one another just to go from one end of the Sun to the other. Yet there are stars out there that ...

Scientists have used data from NASA's retired planet-hunting space telescope 'Kepler' to discover that small and large worlds have very different upbringings. The team found that larger planets on ...