Discovered ‘Earth’ 100 light years from us

Detecting Earth 100 light years away from us - Photo 1.

TOI-1452 b is slightly larger in size and mass than Earth and the special thing about this exoplanet is that it is completely covered by a thick layer of water – Graphic image: Benoit Gougeo/ Université de Montreal

Initially, a team of scientists from the Institute for Research on Exoplanets (iREx) used NASA’s TESS space telescope to survey the entire sky, looking for planetary systems close to Earth.

They detected a signal from TESS that showed a slight decrease in brightness every 11 days and predicted the existence of a planet about 70% larger than Earth.

The team of scientists named it TOI-1452 b, an exoplanet orbiting a small star in the binary system of the constellation Draco.

The host star of the exoplanet TOI-1452 b, TOI-1452, is much smaller than our sun and is one of two similarly sized stars in the binary system.

The two stars orbit each other and are separated by a small distance, about 2.5 times the distance between the sun and Pluto. This distance is so small that the TESS telescope and scientists initially mistook it for a bright spot.

However, upon closer observation, the scientists were able to determine that TOI-1452 b orbits TOI-1452. It took more than 50 hours for scientists to estimate the planet’s mass nearly 5 times that of Earth.

The reason why there is no clear image, even just observed through NASA’s telescope, has concluded that TOI-1452 b is covered with water. The team of scientists, led by Charles Cadieux, an astronomer at the Institute for the Study of Exoplanets (iREx), said: “TOI-1452 b may also be composed of rocks like the Earth, but semi-animals. Its glass, mass and density suggest it’s a very different world from ours.”

Because, by nature, the Earth is a very dry planet. Although about 70% of its surface is covered by oceans, water actually makes up a negligible portion of its total mass – less than 1% to be specific.

In recent years, astronomers have determined the masses and sizes of many exoplanets that are about 3.8 times larger than Earth. Some exoplanets have such “unsuitable” size-to-mass ratios that they can only be explained if a large portion of their mass is made up of materials lighter than those that make up the outer structure. inside of the Earth, such as water.

These exoplanets are considered “ocean planets”.

TOI-1452 b is one of the best candidates for an ocean planet. Analysis of TOI-1452 b shows that water can account for up to 30% of its mass.

This ratio is similar to that of some natural satellites in our Solar System, such as Jupiter’s moons Ganymede and Callisto, or Saturn’s moons Titan and Enceladus.

In their publication in the Astronomical Journal on August 25, the scientists said that they are currently still spending time observing more TOI-1452 b. The team hopes that in the near future, using NASA’s new $10 billion James Webb Space Telescope, will discover more new and interesting information about this exoplanet.

Strange planet with metal clouds and precious stones rain Strange planet with metal clouds and precious stones rain

TTO – WASP-121b – a gas giant orbiting a star 855 light-years from Earth – may have clouds of metal and showers of liquid gems, according to a study published today. 2 in the journal Nature Astronomy.

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