If you want to what the Moon's shadow looks like as it crosses Earth, from space, I highly encourage you to check out NOAA's GOES Image Viewer! As of this moment, you can see a very dark circle crossing over the central United States.
Even better, the website will animate the last 24 or so images (captured every 10 minutes). It's awesome! [1]
[1] https://www.star.nesdis.noaa.gov/goes/fulldisk_band.php?sat=...