Some of these photons will reach distant observers, so that when a black hole is observed directly a «shadow» is expected against the background sky. (sciencedaily.com)
Developing a capacity to consider benefits and harms of online choices for distant observers and larger communities. (gse.harvard.edu)
«The star thus tends to close itself off from any communication with a distant observer; only its gravitational field persists,» they wrote. (sciencenews.org)