Just Pinned to Unlock Your Phone?: Habitable Exoplanets Are Likelier Around Lower Metallicity Stars Surprisingly Trappist-1 type planetary systems known as compact and multiple planet systems seem to preferentially form around low-metallicity stars. That is stars that have lower ratios of iron and other elements heavier than helium in their atmospheres. #android #iPhone #phone #phones #mobile #Apple @leomessi @katyperry @selenagomez @richardbranson https://ift.tt/2z3PZt5 https://ift.tt/2Q23Hny
from Tumblr https://unlockyourphone4free.tumblr.com/post/179521096152
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