Kepler-1625b I

Exomoon Kepler-1625b I orbiting exoplanet Kepler-1625b (artist concept).[1]

Kepler 1625b I, otherwise known as a moon of exoplanet Kepler-1625b, may be the first exomoon ever discovered (pending confirmation), and was first indicated after preliminary observations by the Kepler Space Telescope. After these indications, a more thorough observation campaign by the Hubble Space Telescope took place in October 2017, leading eventually to publication of a discovery paper in "Science Advances" in early October 2018. Studies related to the discovery of this moon suggests that the host exoplanet is up to several Jupiter masses big, since the presumed moon holds about the mass equal to Neptune. There is a possibility that the large exomoon may have a moon itself, called a moonmoon (or a "moon of a moon"),[2] and further, it's possible that the exomoon Kepler-1625b I may be habitable, considering that the host planet has an equilibrium temperature of 253 K (−20 °C; −4 °F).[1][3][4][5][6]

References

  1. 1 2 Chou, Felcia; Villard, Ray; Hawkes, Alison; rown, Katherine (3 October 2018). "Astronomers Find First Evidence of Possible Moon Outside Our Solar System". NASA. Retrieved 5 October 2018.
  2. ↑ Forgan, Duncan (4 October 2018). "The habitable zone for Earthlike exomoons orbiting Kepler-1625b". arXiv:1810.02712v1 [astro-ph.EP].
  3. ↑ Teachey, Alex; Kipping, David M. (3 October 2018). "Evidence for a large exomoon orbiting Kepler-1625b". Science. 4 (10). doi:10.1126/sciadv.aav1784. Retrieved 6 October 2018.
  4. ↑ http://exoplanet.eu/catalog/kepler-1625_b_i/
  5. ↑ Drake, Nadia (3 October 2018). "Weird giant may be the first known alien moon - Evidence is mounting that a world the size of Neptune could be orbiting a giant planet far, far away". National Geographic Society. Retrieved 6 October 2018.
  6. ↑ "Hubble finds compelling evidence for a moon outside the Solar System - Neptune-sized moon orbits Jupiter-sized planet". SpaceTelescope.org. Retrieved 6 October 2018.
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