The exoplanet is covered in water. There is a potential ocean world around 100 light-years away.

A super-Earth is a planet that is larger and heavier than Earth and was discovered by an international team using data from NASA. It is close to the star for liquid water to exist on its surface.

Artistic rendition of the exoplanet TOI-1452 b, a small planet that may be entirely covered in a deep ocean.
Artistic rendition of the exoplanet TOI-1452 b, a small planet that may be entirely covered in a deep ocean. Benoit Gougeon, Université de Montréal

There are clues related to the planet's mass, density, and radius. Less than 1% of our planet's mass is covered by ocean water. The planet TOI 1452 b has a density that suggests it could be made up of water.

One of the best candidates for an ocean planet has been identified as TOI 1452 b. The mass and radius of the planet suggest that it is not as dense as one would expect for a planet made up of metal and rock.

Artistic representation of the surface of TOI-1452 b, which could be an “ocean planet”, i.e. a planet entirely covered by a thick layer of liquid water.
Artistic representation of the surface of TOI-1452 b, which could be an “ocean planet”, i.e. a planet entirely covered by a thick layer of liquid water. Benoit Gougeon, Université de Montréal

It is possible that the planet is similar to some moons in our solar system, like Jupiter's moons Ganymede and Callisto, which are thought to hold liquid oceans. The oceans are hidden because they are so far away from the sun.

Researchers want to study TOI 1452 b in more depth to see if it is covered in a deep ocean or if there is another explanation for its size and density. They are hoping to use the space telescope to observe the planet.

One of the researchers, who is also the Principal Investigator of the NIRISS instrument, said that the observations with the telescope will be essential to better understand TOI 1452 b. We will be able to observe this strange and wonderful world soon.

The research can be found in the journal.

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