Tag Archive for 'HD 189733b'

An artist’s impression of the hot-Jupiter exoplanet HD 189733b. Image credit: Roberto Molar Candanosa / Johns Hopkins University.

Webb Detects Hydrogen Sulfide in Atmosphere of Hot Jupiter

Jul 8, 2024 by News Staff

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...

Hot Jupiters Have Powerful Magnetic Fields

Jul 23, 2019 by News Staff

Hot Jupiters — massive gaseous exoplanets orbiting close to their host stars — have surprisingly powerful magnetic fields, many times stronger...

This image shows an artist’s impression of the ten hot Jupiter exoplanets studied by the astronomers. The images are to scale with each other. HAT-P-12b, the smallest of them, is approximately the size of Jupiter, while WASP-17b, the largest planet in the sample, is almost twice the size. The planets are also depicted with a variety of different cloud properties. Image credit: NASA / ESA / Hubble.

Astronomers Solve Missing Water Mystery in Comparative Study of Hot Jupiters

Dec 15, 2015 by Natali Anderson

A survey of so-called hot-Jupiters – giant exoplanets that orbit very close to their host stars – conducted with NASA’s Spitzer and the NASA/ESA...

HD 189733b is shown here in front of its host star, HD 189733; a belt of wind around the equator of the planet travels at 5,400 mph from the heated day side to the night side. Image credit: Mark A. Garlick / University of Warwick.

HD 189733b: Astronomers Measure Wind Velocities on Hot Jupiter Exoplanet

Nov 13, 2015 by Natali Anderson

Using observations from the High Accuracy Radial velocity Planet Searcher (HARPS), a high-precision spectrograph on ESO’s 3.6-m telescope at La Silla...