Astronomers using NASA’s Hubble Space Telescope have measured the rotation rate of an extreme exoplanet by observing the varied brightness in its atmosphere. This is the first measurement of the ...

Researchers at Nagoya University in Japan have conducted the most detailed simulation of the interior of stars and disproved ...

Webb maps Uranus’s upper atmosphere, revealing cooling temperatures, shifting auroras, and the effects of its tilted magnetic field.

Tracking the rotation speed of solid planets, like the Earth and Mars, is a relatively simple task: Just measure the time it takes for a surface feature to roll into view again. But giant gas planets ...

If you think auroras on Earth are a strange and mesmerizing sight, that's nothing like what occurs on the perplexing world of ...