gemmachan
Jul 12
32K
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“Two possibilities exist: either we are alone in the Universe or we are not. Both are equally terrifying.” - Arthur C. Clarke
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Repost @nasa 👀 SNEAK PEEK: The deepest, sharpest infrared image of the universe ever.
@POTUS previewed the very first image released from the James Webb Space Telescope, the world's most powerful space telescope. Capturing this was all in a day’s work. (Literally! Webb captured this image in less than a day, while similar images from Hubble can take weeks.)
If you held a grain of sand to the sky at arm’s length, that speck is the size of Webb’s view here. Imagine — galaxies galore within a grain! Why do some galaxies appear bent? The combined mass of this galaxy cluster acts as a “gravitational lens,” bending the light rays from more distant galaxies behind it, magnifying them.
This isn’t the farthest back we’ve seen. Non-infrared missions like COBE & WMAP saw the universe closer to the Big Bang (about 380,000 years after), when there was microwave background radiation, but no stars or galaxies. Webb sees a few 100 million years after.
View & download Webb’s new image at our link in bio. Tune in July 12 at 10:30 a.m. EDT (14:30 UTC) for the rest of Webb’s First Images!
Webb is a collaboration between NASA, the @EuropeanSpaceAgency & the @CanadianSpaceAgency. The @Space_Telescopes Science Institute is Webb's science & mission operations center.
Credits: NASA, ESA, CSA & STScI
gemmachan
Jul 12
32K
1.39%
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