Number of Habitable Exoplanets Found by NASA's Kepler May Not Be So High After All
The tally of potentially habitable alien planets may have to be revised downward a bit. To date, NASA's prolific Kepler space telescope has discovered about 30 roughly Earth-size exoplanets in their host stars' "habitable zone" — the range of orbital distances at which liquid water can likely exist on a world's surface.
Or so researchers had thought. New observations by the European Space Agency's (ESA) Gaia spacecraft suggest that the actual number is probably significantly smaller — perhaps between two and 12, NASA officials said today (Oct. 26)
[...] Gaia's observations suggest that some of the Kepler host stars are brighter and bigger than previously believed, the officials added. Planets orbiting such stars are therefore likely larger and hotter than previously thought.
Also at NASA.
(Score: 2) by takyon on Tuesday October 30 2018, @05:04PM (2 children)
https://www.technologyreview.com/s/511016/a-cheap-and-easy-plan-to-stop-global-warming/ [technologyreview.com]
https://www.technologyreview.com/s/603974/harvard-scientists-moving-ahead-on-plans-for-atmospheric-geoengineering-experiments/ [technologyreview.com]
[SIG] 10/28/2017: Soylent Upgrade v14 [soylentnews.org]
(Score: 1) by Sulla on Tuesday October 30 2018, @08:44PM (1 child)
So those articles are from 2013 and 2016, has there been any update on the real world test of this using a balloon? I was going to go down the rabbithole of reading the documentation on the Keith Group website but if you already have it would save me some time.
Ceterum censeo Sinae esse delendam
(Score: 2) by takyon on Tuesday October 30 2018, @09:02PM
Planned for Spring to Fall 2019:
https://projects.iq.harvard.edu/keutschgroup/scopex [harvard.edu]
https://www.technologyreview.com/s/611682/how-one-climate-scientist-combats-threats-and-misinformation-from-chemtrail-conspiracists/ [technologyreview.com]
[SIG] 10/28/2017: Soylent Upgrade v14 [soylentnews.org]