Grain of Sand
Pieter du Toit
Last updated 1 year ago
Watch the Moon transit the Earth
This animation features actual satellite images of the far side of the Moon, illuminated by the Sun, as it crosses between the DSCOVR spacecraft's Earth Polychromatic Imaging Camera (EPIC) and telescope, and the Earth — one million miles away. Image credits: NASA/NOAA.
Anemic Spiral NGC 4921 from Hubble Image Credit: Data - Hubble Legacy Archive, ESA, NASA; Processing - Roberto Colombari How far away is spiral galaxy NGC 4921? Although presently estimated to be about 310 million light years distant, a more precise determination could be coupled with its known recession speed to help humanity better calibrate the expansion rate of the entire visible universe. Toward this goal, several images were taken by the Hubble Space Telescope.