Water and life on two planets close to the Earth

Cairo – (Masrawy):

Astronomers say that Earth-like planets are only 12 light-years away and surround a small, pale star that may contain liquid water and possibly a life form.

Both planets revolve around a star called Tegarden and circulate in the area conducive to life, such as the Earth's orbit around the Sun. They were discovered by the Thaler Alto observatory in Spain last June.

According to the scientific press, the two planets, which revolve around the Tigarden star, located 12.5 light-years away from the surface, are perfectly suitable for the presence of liquid water on their surface and at the surface. 39 atmosphere necessary.

According to scientists, the planets "B" and "C", belonging to the star Tegarden, support the existence of water on them, even if they do not know the shape of the l '. atmosphere.

Scientists say that even though the atmosphere of the two planets is relatively thin, compared to the Earth's atmosphere or much thicker, these two worlds can still be viable and the presence of water.

The two planets, which follow the star Tigarden, were first detected in June 2019 as part of the "Carmine & # 39; s Survey" of the Thalar Alto Observatory.

Tegarden, named after astronomer Bounard Tegarden of NASA, is a red "dwarf star" whose energy and energy are scarce compared to our sun.

The planets orbit very close to their star, which means that the same side of each planet always faces the star of Tegarden, knowing that planet B revolves around the star every 5 days, while that the cycle of the star ends every 11 days.

Some scientists argue that a phenomenon called "tidal locking" can accompany both planets, the same phenomenon that keeps the moon's side close to the Earth's surface, which means that one must ensure the continuation of tidal conditions, which helps sustain life on these. This type of climate is necessary for the availability of liquid water on them and thus supports the existence of life.

But NASA astrophysicist Jesse Christianensen, who did not participate in the ongoing study in New Scientist magazine, confirmed that the planets blocked by the tides could be obstacles to the future. 39, evolution of life.

Some experts believe that the "day and night" cycle is vital for living organisms, which can not be lived in a world that always keeps the same side as its star.

In addition, "tidal locking" could inhibit the planet's magnetic field, meaning that these bodies would be more vulnerable to harmful radiation than their host star.

But despite these concerns, "the two planets orbiting Tigard are very exciting," said Christiansen, noting that they would study them for a while and explore the possibilities of using water liquid.