IT’S been nearly 40 years since the first planet outside of our Solar System was discovered. Since then, more than 5,800 weird and wonderful worlds across 4,300 planetary systems have been ...
In our solar system, Jupiter is the biggest planet at 88,846 miles in equatorial diameter — the distance through the planet from one side to the other at its equator — and a mass of 1,898 × ...
New data from the James Webb Space Telescope (JWST) reveals that the "hot Jupiter" exoplanet HD 189733 b likely has an atmosphere that smells like rotten eggs due to the presence of hydrogen sulfide.