A powerful new observatory is the best hope yet for finding the elusive Planet 9, a large planet that some scientists say is ...

Pluto isn’t the only dwarf planet in our solar system's outer reaches. Now is an ideal time to look for the egg-shaped Haumea ...

"There really is something very different about how these giant planets form versus how small planets like Earth form." ...

Large and small ... create larger planets. The Kepler telescope was named after Johannes Kepler, who was the first scientist to recognize that the planets in our solar system moved in slightly ...

Extrasolar planets contextualise the Solar System among a large number of planetary systems with very different properties. Many extrasolar planets show characteristics which are not realised in the ...

The James Webb Space Telescope has directly observed the key chemical of carbon dioxide in planets outside of our solar system for the ... to be habitable. The "huge leap forward we need to ...

a fraction of our solar system's 4.6 billion years. Still hot from their violent formation, HR 8799 planets emit large amounts of infrared light that give scientists valuable data on how their ...