Tag Archive for 'HAT-P-11b'

An artist’s impression of the exoplanet HAT-P-11b with its extended helium atmosphere blown away by the star, an orange dwarf star smaller, but more active, than the Sun. Image credit: Denis Bajram.

HAT-P-11b Has Strong Magnetosphere, Metal-Poor Atmosphere

Dec 23, 2021 by News Staff

Using ultraviolet data from the NASA/ESA Hubble Space Telescope, astronomers have detected carbon ions — charged particles that interact with magnetic...

Astronomers Spot Helium Cloud around Exo-Neptune HAT-P-11b

Dec 7, 2018 by News Staff

An international team of astronomers has detected helium escaping from the upper atmosphere of HAT-P-11b, a Neptune-mass exoplanet located in the constellation...

Comparison of HAT-P-11b with Neptune. Image credit: Aldaron / CC BY-SA 3.0

Water Vapor Detected on Neptune-sized Exoplanet HAT-P-11b

Sep 24, 2014 by News Staff

A team of astronomers from the United States, Chile and Europe has detected water vapor in the atmosphere of a Neptune-sized extrasolar planet known as...