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Water found for first time on another star's planet [Copy link] 中文

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Post time 2019-9-14 11:19:10 |Display all floors
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PARIS - Water has been discovered for the first time in the atmosphere of an exoplanet with Earth-like temperatures that could support life as we know it, scientists revealed on Wednesday.

Eight times the mass of Earth and twice as big, the planet K2-18b orbits in its star's "habitable zone" at a distance-neither too far nor too close-where water can exist in liquid form, according to the report in the journal Nature Astronomy.

"This planet is the best candidate we have outside our solar system" in the search for signs of life, said co-author Giovanna Tinetti, an astronomer at University College London, or UCL. "We cannot assume that it has oceans on the surface but it is a real possibility."

Of the more than 4,000 exoplanets detected to date, this is the first known to combine a rocky surface and an atmosphere with water.

Most exoplanets with atmospheres are giant balls of gas, and the handful of rocky planets for which data is available seem to have no atmosphere at all.

Even if they did, most Earth-like planets are too far from their stars to have liquid water or so close that any H2O has evaporated.

Discovered in 2015, K2-18b is one of hundreds of so-called "super-Earths"-planets with less than ten times the mass of ours-spotted by NASA's Kepler spacecraft.

Future space missions are expected to detect hundreds more in the coming decades.

"Finding water in a potentially habitable world other than Earth is incredibly exciting," said lead-author Angelos Tsiaras, also from UCL.

K2-18b orbits a red dwarf star about 110 light years distant-a million billion kilometers-in the Leo constellation of the Milky Way, and is probably bombarded by more destructive radiation than Earth.


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Post time 2019-9-14 14:19:43 |Display all floors
re: " about 110 light years distant"

   Good news indeed,

     Glad to hear that,  according to an Indian government think tank, the countrywide drought has left 600 million people dealing with high to extreme water shortages...

      That pipeline will be most welcome...

Hong Kong is having a water shortage as well. Over 70% of Hong Kong's water supply is from Guangdong...
    Hong Kong water is cheap compared to other major cities in the world. In fact, the first 12m3 of water used every four months is free for all domestic users.

    Thank you China
     May we do a little bit of rioting again ....


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Post time 2019-9-14 16:15:32 |Display all floors
Exciting news indeed, and we may find extraterrestrial lives soon in the outer space that could either be superior or inferior to us regarding intelligence. Hopefully, we would be the smarter ones ...
Believe it or not, it's true.

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Post time 2019-9-15 14:51:30 |Display all floors
Liononthehunt Post time: 2019-9-14 16:15
Exciting news indeed, and we may find extraterrestrial lives soon in the outer space that could eith ...

re: " could either be superior or inferior "

  Well, perhaps them fast radio bursts from outer space which have baffled our scientists for years are simply nothing else but kids play from them cave dwellers;  forgot to turn of the mike while talking...

Sudden shrieks of radio waves from deep space slamming into radio telescopes on Earth, spattering those instruments' detectors with confusing data are them kindergarten kids playing with their Toys“R" at a distant world some 999,000 light years away...

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Post time 2019-9-15 14:51:52 |Display all floors
Liononthehunt Post time: 2019-9-14 16:15
Exciting news indeed, and we may find extraterrestrial lives soon in the outer space that could eith ...

re: " could either be superior or inferior "

  Well, perhaps them fast radio bursts from outer space which have baffled our scientists for years are simply nothing else but kids play from them cave dwellers;  forgot to turn of the mike while talking...

Sudden shrieks of radio waves from deep space slamming into radio telescopes on Earth, spattering those instruments' detectors with confusing data are them kindergarten kids playing with their Toys“R" at a distant world some 999,000 light years away...

Use magic tools Report

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