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A planet similar to Earth was discovered, in its habitable zone and at a very short distance from the solar system

The planet, whose distance from its sun allows it to have temperatures similar to Earth's and therefore it may be habitable, is 16 light years away from us * However, the planet is larger than Earth and its sun is smaller than the sun, and therefore it orbits it in 16 days

Artist's illustration of the new planet Gleise 832 c and Earth. Figure PHL, University of Puerto Rico, Arecibo
Artist's illustration of the new planet Gleise 832 c and Earth. Figure PHL, University of Puerto Rico, Arecibo

An Earth-like but larger planet with the potential for life has been discovered just 16 light-years from the solar system. The "super-Earth" planet Gleis GJ 832 c orbits the red dwarf GJ 832 once every 16 days. The mass of this planet is 5 times that of Earth.

In this position, it receives on average the same amount of stellar energy that the Earth receives and therefore may prevail on its surface similar heat measures to those prevailing on the Earth. These characteristics elevate it to a position among the three planets most similar to Earth. These characteristics place it among the three most promising planets in terms of the possibility of life, according to the similarity index to Earth developed by scientists at the University of Puerto Rico in Arecibo.

The international team, led by Dr. Robert Wittenmeier from the School of Physics at the University of New South Wales, reported their findings online in preparation for their publication in the Astrophysical Journal. Prof. Chris Tinney, team member and head of the Extrasolar Planet Science Group at the University of New South Wales, said that if the planet also had an atmosphere similar to that of Earth, it might be possible for life on its surface to survive, although the differences between the seasons would be extreme.

"However, given the large mass of the planet, it seems likely that it has a massive atmosphere, which would make it impossible to live on this planet. A denser atmosphere could trap heat and make it more like Super Venus and too hot for life," said Prof. Tini.

The planet was discovered thanks to the push it gives to its parent star, which causes the star to wobble slightly. Team members used data collected from combined observations at the 6.5-meter Magellan Telescope and the 3.6-meter telescope at the European Southern Observatory - both in Chile - to make the discovery.

The same team also discovered in 2009 that the star may be orbited by a Jupiter-like planet in an orbit nearly
Circular whose entire coffee lasts nine years, and is called Gliese GJ 832 b. "When there is a giant exoplanet and potentially a rocky planet in an inner orbit, this solar system can be seen as a miniature version of our solar system," said Prof Tinney.

In the ESI (Earth Similarity Index), the planet with the highest ranking is Gliese 667C c which is 23 light years away from us. It has an ESI index of 0.84 compared of course to the Earth which was rated 1.0. In second place is Kepler 62 e which is calculated to be 0.83 in the ESI index, but it is 1,200 light years away from us. In third place is the new planet, the closest to us - as mentioned only 16 light years and its value in this index is 0.81.

Researchers from Australia, Great Britain, Finland, USA, Italy and Chile participated in the team.


to the notice of the researchers

More on the subject on the science website: a planet similar to the Earth but different


12 תגובות

  1. We must continue to investigate, even if we don't live on another planet, we may use it to save the planet we live in, even if we read that the earth is destroyed, as a result of war or anything else, if we protect the moon or any other planet during the recovery period of the earth couples, with seeds and plants, it will be possible to rebuild everything, and it is also possible that we will learn from these planets how to survive and protect the earth. There are still endless things that can be discovered, and just as they discovered America, so it will be possible in the future to settle colonies on other planets, You just have to overcome only a few obstacles that exist at the moment, but science is limitless…..

  2. Okay, so let's start warming up our engines to fly in space
    Wait, how long until we arrive?
    16 light years The maximum speed that a spacecraft managed to reach is 25 km/sec
    Ummm that comes out to 200 years of flight
    Well, now you have to find the puberty gene and delay it tzakat 🙂

    So you arrive at the new planet and in one Earth year you mature 22 earthly years
    So your puberty balances out 🙂

  3. To Daniel
    The answer to your question is very simple - no.
    It's easier to keep looking for more extraterrestrial planets. Quite a few such planets are being discovered
    In recent years, there is a reasonable chance that in the near future more earth-compatible planets will be found.

  4. What is needed now is to analyze the atmosphere of the planet Gleis GJ 832 c
    and of its rotation speed around its axis.
    Due to its close proximity to its sun, there is a high probability that the planet completes one rotation around its axis every time it completes a rotation around its sun, and this is due to the strong tidal forces on its surface, similar to the rotation of the moon around its axis. In other words, the side facing the sun is always bright and warm, while the side hidden from the sun is always dark and cold. It is possible that for this reason the bright hot side is dry and desert while the dark side is cold, frozen and also desert. Therefore, if life exists and if there is liquid water according to Gleis GJ 832 c, then it is only on the border, relatively thin, between the warm lighted area and the cold dark area. (Something reminiscent of the haircut of Bellotelli from the Italian national team).
    As a result of the above, it is expected that in the border area between light/heat-dark/cold, there will be a permanent regime of spirits. On the ground there blows a cold polar wind that flows regularly from the cold area to the warm area. At the height of the atmosphere, a warm rum wind blows in the opposite direction from the hot area to the cold area.
    As a result of the fact that the living area is extremely limited, the existence of very small creatures that consume little food and little energy and are adapted to life at low temperatures is possible there. Something like tiny rock mushrooms and so on

  5. To Daniel - if you already have the technology to scrape off four fifths of its mass (and create additional planets in them, obviously), you no longer need to start from such a planet but gather any piece of material you want and convert it into a commanding planet. Just like the friends from Megathea, or even build your own ring world.

    By the way, according to my calculation, if the density of the star is the same as that of the Earth, then the weight of the people will increase by only 78%. It's not something that natural selection won't deal with over a small number of generations.

  6. דניאל
    Let's assume it's possible - what will we do with all the material we scrape off? Where will you move it? Don't forget - the material you remove is in orbit around the sun, and it will stay right next to that star.

  7. A slightly delusional and rather theoretical question
    Would it be possible with the help of suitable tools to shave off layers from the same ball to reduce its volume and in this way reduce its mass?
    In short - adapt the star to our needs

  8. What fun, you can continue to reproduce without an account and continue to destroy our environment. I wonder who will take off in a spaceship that costs billions. Guess, anyone?

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