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Hubble watched a lunar eclipse to see Earth from an alien’s perspective 5nvklj





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Hubble watched a lunar eclipse to see Earth from an alien’s perspective

Dragon
Dragon
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Hubble watched a lunar eclipse to see Earth from an alien’s perspective Empty Hubble watched a lunar eclipse to see Earth from an alien’s perspective

Post by Dragon Tue Aug 18, 2020 1:52 am

To practice searching for extraterrestrial life, researchers have run a dress rehearsal with the one world they know to be habitable: Earth.

While Earth was between the sun and moon for a lunar eclipse in January 2019, the Hubble Space Telescope observed how chemicals in Earth’s atmosphere blocked certain wavelengths of sunlight from reaching the moon.

That observing setup mimicked the way astronomers plan to probe the atmospheres of Earthlike exoplanets as they pass in front of their stars, filtering out some starlight.

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Hubble watched a lunar eclipse to see Earth from an alien’s perspective 334pu7m
Dragon
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Hubble watched a lunar eclipse to see Earth from an alien’s perspective Empty Re: Hubble watched a lunar eclipse to see Earth from an alien’s perspective

Post by Dragon Tue Aug 18, 2020 1:54 am

Hubble watched a lunar eclipse to see Earth from an alien’s perspective 081220_mt_hubble-eclipse_feat-1028x579
M. Kornmesser/Hubble/ESA

In January 2019, the Hubble Space Telescope (illustrated against the backdrop of the moon) made its first observations of a total lunar eclipse.

“We basically pretend we’re alien observers looking at our planet,” says Giada Arney, a planetary scientist at NASA’s Goddard Space Flight Center in Greenbelt, Md.

Source / Image Courtesy


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Hubble watched a lunar eclipse to see Earth from an alien’s perspective 334pu7m

    Current date/time is Fri Mar 05, 2021 9:24 am