{"id":88376,"date":"2018-08-21T10:00:36","date_gmt":"2018-08-21T10:00:36","guid":{"rendered":"http:\/\/www.bnreport.com\/super-earth-exoplanets-full-of-water-are-a-good-sign-for-extraterrestrial-life-cnet\/"},"modified":"2018-08-21T10:00:36","modified_gmt":"2018-08-21T10:00:36","slug":"super-earth-exoplanets-full-of-water-are-a-good-sign-for-extraterrestrial-life-cnet","status":"publish","type":"post","link":"https:\/\/www.bnreport.com\/en\/super-earth-exoplanets-full-of-water-are-a-good-sign-for-extraterrestrial-life-cnet\/","title":{"rendered":"Super-Earth exoplanets full of water are a good sign for extraterrestrial life \u2013 CNET"},"content":{"rendered":"
NASA <\/figcaption><\/figure>\n

In our search for life beyond our own little corner of the cosmos, it's a really good idea to look for water. No life we know of exists without it.<\/p>\n

So when astronomers go looking at planets orbiting stars outside of our Solar System, discovering water is a positive sign. New research presented<\/a> at the Goldschmidt geochemical conference in Boston on Friday suggests that water worlds may be a lot more common than we had believed.<\/p>\n

The team of researchers at Harvard University, led by Dr. Li Zeng, analyzed data from the Kepler Space Telescope<\/a>, which has been planet-hunting since 2009. In that time, it has discovered more than 4000 exoplanets, most of which are regarded as Super-Earths, hulking planets that are 1.5 or 2.5 times the radius of Earth.<\/p>\n

Using mass measurements from the European Space Agency's Gaia satellite, the team were able to predict the composition of these far-away planets<\/p>\n

"We have looked at how mass relates to radius, and developed a model which might explain the relationship", Li Zeng said<\/a>. That model suggests that around 35 percent of all currently known exoplanets that are bigger than Earth should be water worlds.<\/p>\n

That's good news for Kevin Costner<\/a>, of course, but it's also a positive for finding life. However, Zeng was quick to caution that while their model predicts these Super-Earths are filled with water, this isn't your everyday Terran water. This is water with a surface temperature well in excess of 200 degrees Celsius (around 392 degrees Fahrenheit).<\/p>\n

Still, life finds a way.<\/p>\n

"Life could develop in certain near-surface layers on these water worlds when the pressure, temperature and chemical conditions are appropriate," Zeng told Discover Magazine<\/a>.<\/p>\n

In the hunt for extraterrestrial life, water worlds certainly provide a handy start. NASA will get a further boost in its planet-hunting endeavors soon, with the Transiting Exoplanet Survey Satellite (TESS), which launched in April this year<\/a>, ramping up its search in July. It's already snapped some stunning images of a comet zipping through space<\/a> and now its focus is on finding new planets.<\/p>\n

<\/a><\/strong> <\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

NASA
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