The objects are 218 light-years away in the constellation Lyra.

Two exoplanets in the Kepler-138 planetary system orbiting a red dwarf star are “water worlds.” Space objects are unlike any planet in the solar system.

According to researchers from the University of Montreal, water on these exoplanets occupies most of the area. Scientists led by Caroline Piaule are observing Kepler-138 c and Kepler-138 d using the Hubble and Spitzer telescopes.

At the same time, water as such was not found on the objects, but the conclusion about the composition of exoplanets was reached by comparing their sizes and masses with the Earth. According to their data, the volumes of these objects are more than three times the volume of the Earth and have twice the mass, and their density is much lower.

“We used to think that planets slightly larger than Earth were big balls of metal and rock, like enlarged versions of Earth, and so we called them super-Earths. But now we’ve shown that these two planets, Kepler-138 c and d, are quite are different in nature, and that the majority of their volume is likely to consist of water,” said a professor of astrophysics at the University of Montreal.

Sravka . Exoplanets are planets outside the solar system. They can be detected by periodic changes in the radial velocities of the central stars under their gravitational influence during orbits.

As reported, on August 25 it became known that the James Webb NASA space telescope was the first in history to record carbon dioxide in the atmosphere of a planet located outside the Solar System.