Nereideさんのイラストまとめ
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Giovanni Battista #Donati, born #otd in 1826, was an Italian astronomer and a pioneer in the #spectroscopic study of the #stars, the #Sun, and #comets.
Between 1854 and 1864 he discovered 6 new comets, including the spectacular #CometDonati (C/1858 L1), found in 1858.
#space
A @uarizona-led team of scientists generated millions of different #universes on a #supercomputer, each of which obeyed different physical theories for how #galaxies should form.
Article: https://t.co/ph3LHcqrEh
Paper: https://t.co/wtIjKGkg1o
Did you know that up to 80% of the water on the #ISS is recycled? #Astronauts might prefer not to think about it, but the #water they drink is recycled from their colleague’s sweat and exhaled breath–collected as condensation on the ISS walls. https://t.co/yTfVosxWUF
#space #ESA