Chanserna för ET ökar:
http://gizmodo.com/scientists-find-first-instance-of-water-clouds-outside-1783390502
"a team of researchers from UC Santa Cruz announced that they have detected
water clouds for the first time outside our solar system on a brown dwarf known
as WISE 0855, which is around 7.2 light-years away from Earth. ...
Researchers confirmed that the dwarf’s atmosphere is “dominated by water vapor
and clouds.”
“It’s five times fainter than any other object detected with ground-based
spectroscopy at this wavelength,” co-author and assistant professor of
astronomy and astrophysics at UC Santa Cruz Andrew Skemer said. “Now that we
have a spectrum, we can really start thinking about what’s going on in this
object.”
In regards to planets in our solar system, WISE 0855 is closest in
composition to Jupiter, although it’s much larger—five times larger in fact.
It’s considered a “failed star” or a “brown dwarf” because it was formed in the
same way as stars, but wasn’t large enough to ignite the nuclear fusion
reactions required to make a star. Its average temperature is about 250 Kelvin,
or minus 10 degrees Fahrenheit, making it nearly as cold as Jupiter, which
clocks in at around 130 Kelvin."
--Ahrvid
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