Ocean planets as a research area concerns the theoretical prediction, characterization, and observational identification of exoplanets with deep, global water layers potentially hundreds of kilometers thick, lacking significant exposed landmasses. This field integrates planetary formation models, high-pressure water and ice phase diagrams, interior structure and heat transport modeling, and atmospheric-ocean coupling to assess habitability and observable signatures. Research focuses on how volatile delivery, disk chemistry, and migration produce water-rich worlds, how high-pressure ice mantles affect geochemical cycling and climate regulation, and how spectroscopic biomarkers and bulk density constraints can distinguish ocean planets from terrestrial, mini-Neptune, or sub-Neptune exoplanets in current and future surveys.
Here's a thought experiment that keeps planetary scientists awake at night. Strip every living thing from our planet, every bacterium, every blade of grass, every creature that has ever drawn breath and ask a simple but profound ...
Astrobiology
Mar 2, 2026
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67
In the eastern Utah desert, carbon-dioxide-saturated water bubbles, sprays and foams from the ground. These cold-water geysers, sometimes called soda pop geysers, are a new and reliable Earth-based analog for scientists studying ...
Astrobiology
Feb 16, 2026
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57
Lately we've been reporting about a series of studies on the Habitable Worlds Observatory (HWO), NASA's flagship telescope mission for the 2040s. These studies have looked at the type of data they need to collect, and what ...
Planetary Sciences
Jan 27, 2026
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21
How can scientists estimate the pH level of Enceladus' subsurface ocean without landing on its surface? This is what a study recently posted to the arXiv preprint server hopes to address as a team of scientists from Japan ...
Planetary Sciences
Jan 21, 2026
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41
A recent study by geophysicists at Washington State University offers insight into how nutrients may reach the subsurface ocean of Europa, one of Jupiter's moons and a leading candidate for extraterrestrial life in the solar ...
Astrobiology
Jan 20, 2026
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352
Careful reanalysis of data from more than a decade ago indicates that Saturn's biggest moon, Titan, does not have a vast ocean beneath its icy surface, as suggested previously. Instead, a journey below the frozen exterior ...
Astrobiology
Dec 17, 2025
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150
As more and more exoplanets are discovered throughout the galaxy, scientists find some that defy explanation—at least for awhile. A new study, published in Nature, describes a process that might explain why a large portion ...
Growing evidence suggests that a subsurface ocean lurks beneath the icy surface of Uranus' moon Ariel, but new research, published in Icarus, characterizes the possible evolution of this ocean, and found that it may have ...
Planetary Sciences
Sep 29, 2025
1
189
An exoplanet orbiting a dwarf star 124 light-years from Earth made headlines around the world in April 2025. Researchers at the University of Cambridge reported that planet K2-18b could be a marine world with a deep, global ...
Planetary Sciences
Sep 18, 2025
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80
University of Bristol astrophysicists are helping shed new light on an Earth-sized exoplanet 40 light years away where liquid water in the form of a global ocean or icy expanse might exist on its surface. That would only ...
Astronomy
Sep 8, 2025
0
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