Alien breakthrough? Scientists detect water in potentially habitable exoplanet

Water discovered on potentially habitable planet

Water discovered on potentially habitable planet

"It's got water in its air but it's nearly certainly got no surface ... where you could find that water pooling as a liquid in lakes and oceans, and that's of course, what we need for life, at least as far as we're aware", he said.

Some reasons project that life could be possible on K2-18b due to its close distance with its star and large probability of light of its star to pass through the atmosphere.

Although a lot of scientists and astronomers are excited, some of them are still dubious and doubtful, The findings may help in speculation but there is nothing definitive though at the moment. The exoplanet is probably having a water-based atmosphere but the exact confirmation of helium or hydrogen is still awaited. In a paper just submitted to the Astronomical Journal for publication, these scientists suggest it might even be raining there.

Water vapor was found in the atmosphere of K2-18b, one of hundreds of "super-Earths" - worlds ranging in size between Earth and Neptune - documented in a growing new field of astronomy devoted to the exploration of so-called exoplanets elsewhere in the Milky Way galaxy. As the host star is quite smaller which is cooler than sun and closes the planet K2-18b it is expected that the planet to gain a little more light than Earth. In the constellation of the water snake (Hydra) discovered exoplanets orbiting the 31 light-years distant star GJ 357.

That is, K2-18b refers to the type of supertall - the planets, whose dimensions are in the range between the masses of Earth and Neptune.

The research teams used archived data from the Hubble Space Telescope and other spacecraft to analyze the planet's atmosphere.

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The researchers made their discovery through NASA and the European Space Agency's Hubble Space Telescope.

Over the last decade or so, several studies (1,2,3,4) have confirmed the existence of water in the atmosphere of gas giants outside our solar system.

"This planet is the best candidate we have outside our solar system" in the search for signs of life, co-author Giovanna Tinetti, an astronomer at University College London, told AFP.

Recently, an worldwide team of researchers had discovered, with the participation of the University of Göttingen, three new planets, one of which may be habitable. This is a massive finding for scientists who have been looking for a habitable planet besides the earth.

The surface, meanwhile, could be wet or dry. That means the surface gravity on this planet would be significantly higher than on our planet.

In contrast, the proportion of water vapor in the planet's atmosphere varies between 0.2 percent over the rods and around four percent at the tropics.

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