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Astronomers have measured gases in the atmosphere of a "super-Earth" exoplanet, 55 Cancri e:
For the first time, astronomers have managed a direct measurement of the gases present on a "super-Earth" planet orbiting an alien star. They found evidence for hydrogen and helium in its atmosphere, but no water. Called 55 Cancri e, the world is twice the size of Earth and eight times the mass - but orbits unusually close to its host star, with an 18-hour year and surface temperatures above 2,000C. The UK team published their findings in the Astrophysical Journal.
"This is a very exciting result because it's the first time that we have been able to find the spectral fingerprints that show the gases present in the atmosphere of a super-Earth," said Angelos Tsiaras, a PhD student at University College London and the first author of the paper. "Our analysis of 55 Cancri e's atmosphere suggests that the planet has managed to cling on to a significant amount of hydrogen and helium from the nebula from which it formed."
55 Cancri e is at least 48% as massive as Neptune. The exoplanet is about 40 light years away from Earth.
Detection of an atmosphere around the super-Earth 55 Cancri e
(Score: 2) by VLM on Wednesday February 17 2016, @08:05PM
I looked it up to verify, and this was the "steel world" planet from the B.V. Larson book "Steel World".
Oh well, steel, helium, whats the difference, right?
Thats the danger with writing a fictional story using a real exoplanet star. Next thing you know, Tattoine will turn out to not really be a desert planet.
Still if 55 Cancri e none the less turns out to have a rocky metallic planet made of tasty stuff to turn into alloy steel and is inhabited with double crossing giant reptile look alikes, I guess you heard it first from B.V. Larson.
(Score: 2) by el_oscuro on Thursday February 18 2016, @02:36AM
Actually, I believe Tattoine is located at 36.81881000,10.16596000, and its climate is pretty accurate.
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