Ocean world - Wikipedia
An ocean world, ocean planet or water world is a type of planet that contains a substantial amount of water in the form of oceans, as part of its hydrosphere, either beneath the surface, as subsurface oceans, or on the surface, potentially submerging all dry land.
GJ 1214 b - Wikipedia
GJ 1214 b could be a rocky planet with an outgassed hydrogen-rich atmosphere, a mini-Neptune, or an ocean planet. [10] If it is a waterworld, it could possibly be thought of as a bigger and hotter version of Jupiter's Galilean moon Europa. [10]
Astronomers discover potential "water world" exoplanet nearby …
2022年8月26日 · If this "one-of-a-kind" exoplanet were confirmed to be a water world, its ocean would be significantly deeper than Earth's. While our planet is 70% water, oceans account for less than 1% of the...
These two planets are made of water, study says | CNN
2022年12月17日 · The “water worlds” are outside their star’s habitable zone – the area in which temperatures allow liquid water on the surface of a rocky planet, potentially supporting life. But the new planet...
Hubble Discovers Waterworld Planet - Science@NASA
2012年2月21日 · GJ1214b, shown in this artist's view, is a super-Earth orbiting a red dwarf star 40light-years from Earth. New observations from NASA's Hubble Space Telescopeshow that it is a waterworld enshrouded by a thick, steamy atmosphere.
Two Exoplanets May Be Mostly Water, NASA’s Hubble and Spitzer …
2022年12月15日 · A team led by researchers at the University of Montreal has found evidence that two exoplanets orbiting a red dwarf star are “water worlds,” where water makes up a large fraction of the entire planet. These worlds, located in a planetary system 218 light-years away in the constellation Lyra, are unlike any planet found in […]
James Webb telescope discovers ancient 'water world' in nearby …
2023年5月15日 · The James Webb Space Telescope took its first close look at a "mini-Neptune" — the most common type of planet beyond our solar system — and found signs of water.
GJ1214b - NASA Science
2009年12月16日 · The exoplanet, orbiting a small star only 40 light-years away from us, thus opens dramatic new perspectives in the quest for habitable worlds. The planet, GJ1214b, has a mass about six times that of Earth and its interior is likely mostly made of water ice.
Ocean Worlds - NASA
Earth isn’t the only ocean world in our solar system. Water on other worlds exists in diverse forms on moons, dwarf planets, and even comets. Ice, water vapor in the atmosphere, and oceans on other worlds offer clues in the quest to discover life beyond our home planet.
Are Water Worlds Habitable? - Scientific American
2018年4月5日 · Roughly 39 light-years away toward the constellation Aquarius is a planet that hosts a global ocean so deep it drowns the land. Set sail anywhere on that water world and you will never spot...