WATER WORLDS: Hideouts for Alien Life?
Far beyond Earth, a new type of alien water planet could be speckling our galaxy by the billions, like cosmic dew drops.
These “Hycean Planets” range up to ten times the mass of the Earth, containing mega-oceans that could stretch down hundreds of kilometers.
Their extreme pressures keep their water liquid across a wide range of temperatures, broadening the zone in which they could host life. And researchers now believe that these worlds are extremely common in the universe.
Soon we will get our first peek into the atmosphere of a possible Hycean world, K2-18b, thanks to the James Webb Space Telescope. What secrets will these ocean worlds reveal? Is something out there, swimming freely in an ocean more vast that we can imagine?
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Visuals, sound, and script by melodysheep
Narrated by will crowley
Stock footage courtesy Artgrid
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Sources:
Batalha, Natalie, and Wendy Stenzel. Exoplanet Populations. https://www.nasa.gov/image-
feature/ames/kepler/exoplanet-populations
Benneke, Björn, et al. Water Vapor and Clouds on the Habitable-Zone Sub-Neptune Exoplanet K2-18b. 2, 2019.
DOI.org (Datacite), https://doi.org/10.48550/ARXIV.1909.0....
Innes, Hamish, et al. The Runaway Greenhouse Effect on Hycean Worlds. 1, 2023. DOI.org (Datacite),
https://doi.org/10.48550/ARXIV.2304.0....
Madhusudhan, Nikku, Julianne I. Moses, et al. Chemical Conditions on Hycean Worlds. 1, 2023. DOI.org (Datacite),
https://doi.org/10.48550/ARXIV.2306.1....
Madhusudhan, Nikku, Anjali A. A. Piette, et al. Habitability and Biosignatures of Hycean Worlds. 2, 2021. DOI.org
(Datacite), https://doi.org/10.48550/ARXIV.2108.1....
Madhusudhan, Nikku, Matthew C. Nixon, et al. The Interior and Atmosphere of the Habitable-Zone Exoplanet K2-18b.
1, 2020. DOI.org (Datacite), https://doi.org/10.48550/ARXIV.2002.1....
https://arxiv.org/pdf/2108.10888.pdf
https://www.inverse.com/science/hycea...
https://www.discovermagazine.com/the-...
• New Type of Planets, Hycean Worlds, C...
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