Tag Archive for 'GJ 3470b'

An artist’s impression of the warm-Neptune exoplanet GJ 3470b. Image credit: Department of Astronomy, UW-Madison.

Nearby Warm Neptune Has Sulfurous Atmosphere, Astronomers Say

Jun 17, 2024 by News Staff

A warm-Neptune exoplanet called GJ 3470b (Gliese 3470b) is 96 light-years away and circles a 2-billion-year-old red dwarf star in the general direction...

This artist’s illustration shows a giant cloud of hydrogen streaming off the warm Neptune GJ 3470b. The host star’s intense radiation is heating the hydrogen in the planet’s upper atmosphere to a point where it escapes into space. GJ 3470b is losing hydrogen at a rate 100 times faster than a previously observed warm Neptune whose atmosphere is also evaporating away. Image credit: NASA / ESA / D. Player, STScI.

Hubble and Spitzer Space Telescopes Probe Atmosphere of Sub-Neptune

Jul 3, 2019 by News Staff

Astronomers are curious about the two recently-discovered classes of planets not found in the Solar System: the so-called super-Earths and sub-Neptunes,...

Hubble Finds Fast-Evaporating Warm Neptune: GJ 3470b

Dec 14, 2018 by News Staff

Extrasolar ‘Neptunes’ are exoplanets with masses and radii similar to those of the ice giants in the Solar System. In 2015, astronomers using the NASA/ESA...