Ultrahot Jupiters, an extreme class of planets not found in our Solar System, provide a unique window into atmospheric processes. Using four telescope...
WASP-132 is a unique multi-planet system in that both an inner rocky planet and the newly-discovered outer giant planet are in a system with a hot-Jupiter...
Astronomers have long thought that the upper clouds of Jupiter, which create the planet’s iconic pale brown belts, are made of frozen ammonia. But a...
Saturn’s icy rings could be much older than they appear due to their resistance to pollution from impacts with rocky debris.
Hyodo et al. suggest that...
The OPAL (Outer Planet Atmospheres Legacy) program obtains long-term baseline observations of Jupiter, Saturn, Uranus, and Neptune in order to understand...
Kepler-51 is a 500-million-year-old G-type star hosting four low density planets, according to a new paper published in the Astronomical Journal.
This...
These Earth-size ovals at Jupiter’s north and south poles are visible only at ultraviolet (UV) wavelengths, and appear and disappear seemingly at random,...
Using the Near-Infrared Imager and Slitless Spectrograph (NIRISS) instrument on the NASA/ESA/CSA James Webb Space Telescope, astronomers have discovered...
Astronomers using Webb’s MIRI (Mid-Infrared Instrument) have imaged Epsilon Indi Ab, a gas giant several times the mass of Jupiter located around 12...
Astronomers have discovered an exoplanet five times the mass of Jupiter that makes a very peculiar orbit around its star.
An artist’s impression of TIC...
Astronomers using the NASA/ESA/CSA James Webb Space Telescope have detected trace amounts of hydrogen sulfide in the atmosphere of the Jupiter-sized exoplanet...
Jupiter’s upper atmosphere is composed of a neutral thermosphere and charged ionosphere. Astronomers using the NASA/ESA/CSA James Webb Space Telescope...
Jupiter’s Great Red Spot is probably the best known atmospheric feature and a popular icon among solar system objects. Its large oval shape, contrasted...
Planetary scientists first made the connection between Earth and Jupiter in 2018 when they noticed a striking similarity between images of Jupiter’s...
NASA’s Juno orbiter captured these views of the tiny, red moon Amalthea and its parent planet and during a close flyby on March 7, 2024.
These views...
Gas giant exoplanets around bright nearby stars provide crucial insights into planetary system formation and evolution mechanisms. Most of these planets...
WASP-43b is cloudy on the nightside and clear on the dayside, with equatorial winds howling around the planet at 8,050 km per hour (5,000 mph).
This artist’s...
Using data from ESA’s Characterising ExOplanet Satellite (CHEOPS) and several other ESA and NASA missions, astronomers have detected signs of the rainbow-like...
