The study team found 27 short-duration candidate microlensing signals that varied over timescales of between an hour and 10 days.
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During this two-month campaign, Kepler monitored a crowded field of millions of stars near the center of our Galaxy every 30 minutes in order to find rare gravitational microlensing events. The study, led by Iain McDonald of the University of Manchester, UK, (now based at the Open University, UK) used data obtained in 2016 during the K2 mission phase of NASA's Kepler Space Telescope. The results include four new discoveries that are consistent with planets of similar masses to Earth, published today in Monthly Notices of the Royal Astronomical Society. Finding Earth 2.0 is not easy and showing these exoplanets have life too.Tantalizing evidence has been uncovered for a mysterious population of "free-floating" planets, planets that may be alone in deep space, unbound to any host star. The minimum orbital period is 1.5 days and max, 730,000 days. The average exoplanet mass is more than 15 Jupiters with the minimum in the Trappist system, 0.33 earth masses. I used this site and ran a MS SQL query for host stars <=0.1 solar mass (similar to Trappist system), The Extrasolar Planets EncyclopaediaĤ4 exoplanets showed up for duty around these very small, red dwarf stars and a very large variety in properties too. Indeed, this is an interesting exoplanet system. It further allowed scientists to learn about the size and mass of the planets, which helps scientists determine whether the planets are rocky or gaseous." Spitzer discovered five of the planets after looking at the star for about 500 hours. Current research suggests that three of the planets may be habitable, because they orbit in an area of the star that has enough heat to allow for liquid water on their surfaces. The report said about Trappist system, "Here at, we've written extensively about the incredible TRAPPIST-1 system, where seven Earth-size planets orbit a single star. The Spitzer Space Telescope's greatest exoplanet discoveries of all time : Read moreĪn interesting summary report on Spitzer findings in exoplanet studies. Īdmin said:One of Spitzer's greatest contributions was what it told us about alien worlds. Follow us on Twitter (opens in new tab) and on Facebook (opens in new tab). Digital calendar shows best images from NASA space telescopeįollow Elizabeth Howell on Twitter (opens in new tab).Space telescopes of the future: NASA has 4 ideas for great observatory to fly in 2030s.
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Its infrared eye changed our view of the universe.