Space. Probable ‘Ocean’ Planet Discovered: What You Need to Know

Des scientifiques ont découvert une planète qui pourrait être complètement recouverte d

By Martin Leduc Posted on August 31, 22 at 7:50 pm News See my news Follow this medium Scientists have discovered a planet that could be completely covered in water. – Illustrative photo: This image does not represent TOI 1452 b. (©mozZz / Adobe Stock) “We are still living a wonderful time with the discovery of all these curiosities,” exclaims Gilles Dawidowicz, vice-president of the French Astronomical Society and president of the planetology commission, by phone. After the James Webb telescope observed an exoplanet whose atmosphere is partly composed of CO2 and we were able to see a planet shaped like a rugby ball, this time it was Canadian scientists from the University of Montreal and the Institute for Research on Exoplanets. , who have discovered a planet they believe is completely covered in water. See the tweet “Unheard of in these proportions, whether in our solar system or anywhere else,” the vice president specifies. A mass composed of between 20 and 30% water. Earth is 1% in the constellation Draco, 100 light-years away, or 950 billion kilometers from our good old Earth, the mass of this planet with the rather tentative name of TOI-1452 b , would be, according to Charles Cadieux. , one of the discoverers, composed of water in Dantesque proportions: between 20 and 30%. By way of comparison, the mass of our blue planet, covered by 72% water, is composed of just 1% H2O. The exoplanet TOI-1452 b may be rocky like Earth, but its radius, mass and density suggest it would be a very different world than ours. Charles Cadieux, PhD student at the University of Montreal and member of the Institute for Research on Exoplanets, slightly larger and more massive than Earth (about 70% larger and 5 times more massive), according to Charles Cadieux, this exoplanet has a sun, titled TOI-1452. This one, smaller than ours, would heat it “at temperatures neither too hot nor too cold”. Videos: currently in Actu “If we assume that the atmosphere of this exoplanet is similar to ours, and that it really is water, that would mean that it is between 0 and 100 degrees,” says Gilles Dawidowicz. Is there a tidal phenomenon like in the movie Interstellar? It is not known, on the other hand, if one or more moons are present and apply a tidal phenomenon to TOI-1452 b) that takes place on this exoplanet. But that’s pretty awesome for now, because it’s impossible to say. And life? Again, impossible to answer. “Having water does not necessarily mean that there is life,” says Gilles Dawidowicz. Even if we suspect that it really is water, it could be very salty, radioactive and suddenly sterile… Gilles DawidowiczVice-president of the Astronomical Society of France, on the other hand, one can very well imagine that there was, or will be life “Nothing is impossible,” he recalls. Many questions that James Webb will be able to answer For now, only the fact that this exoplanet is covered in liquid is certain. “It could be a completely different liquid, and that would change everything,” remarks the president of the Planetology Commission. In the same vein, if we realize that the atmosphere is not at all the same as on Earth, this would change many things, especially in terms of temperature: “at the top of Everest, water boils at 60 °C , ” he recalls. But this information, the James Webb telescope, which has just taken magnificent photos of Jupiter, is able to provide us with it. “This will attract the attention of astronomers, who will want to know more. We should learn more in the coming weeks,” he explains. And then, as a reminder, there are billions of exoplanets. Maybe one day we’ll find them others without a sun, huge asteroids, very particular shapes… There are so many things left to discover. We hope. Did you find this article useful? Note that you can follow Actu in the My Actu space. In one click, then once you’ve registered, you’ll find all the news from your favorite cities and brands.
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