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takyon writes:

Hubble finds compelling evidence for a moon outside the Solar System

Using the NASA/ESA Hubble Space Telescope and older data from the Kepler Space Telescope two astronomers have found the first compelling evidence for a moon outside our own Solar System. The data indicate an exomoon the size of Neptune, in a stellar system 8000 light-years from Earth. The new results are presented in the journal Science Advances.

[...] In 2017 NASA's Kepler Space Telescope detected hints of an exomoon orbiting the planet Kepler-1625b. Now, two scientists from Columbia University in New York (USA) have used the incomparable capabilities of the NASA/ESA Hubble Space Telescope to study the star Kepler-1625, 8000 light-years away, and its planet in more detail. The new observations made with Hubble show compelling evidence for a large exomoon orbiting the only known planet of Kepler-1625. If confirmed, this would be the first discovery of a moon outside our Solar System.

The candidate moon, with the designation Kepler-1625b-i, is unusual because of its large size; it is comparable in diameter to the planet Neptune. Such gargantuan moons are unknown in our own Solar System.

Other sources put Kepler-1625 at around 4,000 light years away.

Discoveries like this are why we could use as many identical better-than-Hubble space telescopes as we can build and launch.

Also at Sky & Telescope, Cosmos Magazine, The Verge, Axios, NPR, CNN.

Evidence for a large exomoon orbiting Kepler-1625b (open, DOI: 10.1126/sciadv.aav1784) (DX)

Previously: First Exo-Moon Discovered?
First Known Exomoon May Have Been Detected: Kepler 1625b i

Original Submission

1. "takyon" - https://soylentnews.org/~takyon/
2. "Hubble finds compelling evidence for a moon outside the Solar System" - https://www.spacetelescope.org/news/heic1817/
3. "NASA's Kepler Space Telescope" - https://www.nasa.gov/mission_pages/kepler/main/index.html
4. "Kepler-1625b" - https://en.wikipedia.org/wiki/Kepler-1625b
5. "NASA/ESA Hubble Space Telescope" - https://www.spacetelescope.org/
6. "Kepler-1625" - https://en.wikipedia.org/wiki/Kepler-1625
7. "Neptune" - https://en.wikipedia.org/wiki/Neptune
8. "Other sources" - http://exoplanet.eu/catalog/kepler-1625_b/
9. "identical better-than-Hubble space telescopes" - https://soylentnews.org/comments.pl?noupdate=1&sid=27817&page=1&cid=741196#commentwrap
10. "Sky & Telescope" - https://www.skyandtelescope.com/astronomy-news/hubble-boosts-case-first-known-exomoon/
11. "Cosmos Magazine" - https://cosmosmagazine.com/space/astronomers-cautiously-claim-the-first-exomoon
12. "The Verge" - https://www.theverge.com/2018/10/3/17928328/exomoon-kepler-1625b-hubble-space-telescope-exoplanets
13. "Axios" - https://www.axios.com/neptune-sized-exomoon-found-orbiting-jupiter-sized-planet-9d1a43aa-9dc5-4779-9213-5ac1f28e8204.html
14. "NPR" - https://www.npr.org/2018/10/03/653666274/scientists-find-what-could-be-a-history-making-moon
15. "CNN" - https://www.cnn.com/2018/10/03/world/exomoon-discovery/index.html
16. "Evidence for a large exomoon orbiting Kepler-1625b" - http://advances.sciencemag.org/content/4/10/eaav1784
17. "DX" - https://dx.doi.org/10.1126/sciadv.aav1784
18. "First Exo-Moon Discovered?" - https://soylentnews.org/article.pl?sid=14/04/11/0337250
19. "First Known Exomoon May Have Been Detected: Kepler 1625b i" - https://soylentnews.org/article.pl?sid=17/07/29/033233
20. "Original Submission" - https://soylentnews.org/submit.pl?op=viewsub&subid=29359

printed from SoylentNews, New Evidence Supports Existence of Neptune-Sized Exomoon Orbiting Kepler-1625b on 2024-04-20 12:24:49