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Let's All Move to TRAPPIST-1

From NASA's Visions of the Future poster collection, all available here.

Some of the most exciting astronomy news to come out of 2017 was the discovery of the TRAPPIST-1 exoplanetary system, an ultracool red dwarf star with not one, but SEVEN roughly Earth-sized planets detected within its orbit.  Three of those planets are within the "Goldilocks Zone", orbiting at a distance which would allow liquid water to exist on their surface.

On February 5, 2018, the results of two new studies using the Hubble telescope were announced, together suggesting that the TRAPPIST-1 planets are all terrestrial (rocky planets), and that they are rich in volatile materials -- probably including water.

Observations were made using Hubble Space Telescope and published in Nature Astronomy.  "Our results demonstrate Hubble’s ability to study the atmospheres of Earth-sized planets," comments co-author Hannah Wakeford.  "But the telescope is really working at the limit of what i…

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