Scientists have identified a large number of planets described as superterrestrial planets in recent memory, but they recently discovered one that has no analogues yet.
According to a study published in The Astronomical Journal, the planet known as TOI-561 b orbits the TOI-561 star system.
The planet is about 50% larger than Earth, but takes half the time to orbit its star due to the close proximity between them.
“The rocky planet orbiting TOI-561 is one of the oldest rocky planets discovered so far,” said lead author Lauren Weiss. “Its existence indicates that the universe has formed nearly rocky planets since its creation 14 billion years ago.”
Due to its proximity to TOI-561, which was discovered by NASA’s Transiting Exoplanet Exploration Satellite (TESS), its average surface temperature is estimated to be more than 2,000 Kelvin. It’s too hot to accept life now, but it could have happened in the past.
Super-Earth has also surprised scientists, who believe that its density is comparable to that of the Earth, despite being billions of years older.
“This is surprising because you expect the density to be higher,” said UC Riverside astrophysicist and study co-author Stephen Kane in a separate statement. “This is consistent with the idea that the planet is very old.”
The low density of TOI-561b indicates that it contains relatively few heavy elements, which is why it is very old and formed about 10 billion years ago, according to Weiss, a researcher at the University of Hawaii.
The scientists explained that TOI-561, around which at least two other planets revolve, is part of a group of stars known as the “thick galactic disk,” which is chemically different but does not contain heavy elements like iron or magnesium.
As researchers discover more exoplanets, they continue to learn more about their mass, radius and habitability.
“The information about the interior of the planet gives us an idea of whether the surface of the planet is habitable as we know it,” said Kane. “While it is unlikely that this planet will be inhabited today, it could be the harbinger of many rocky, yet undiscovered worlds around the oldest stars. Our Galaxy “.
And in May, a super-earth planet was discovered in deep space, described as “one in a million” due to its size and orbit similar to Earth.
And in June, a group of German astronomers discovered two planets of the above-ground group 11 light years from Earth.
A study published last October identified 24 potentially “habitable” planets whose conditions may be more suitable for life.
Separately, in October, scientists discovered two planets, one of which is a “super-Earth,” orbiting a red dwarf about 120 light-years from Earth.
In total, NASA has discovered more than 4,500 exoplanets, about 50 of which are considered potentially habitable as of September 2018. It has the right size and correct orbit for its star to support surface water and, in theory at least, support life.
Source: Fox News