Can astronauts see stars in space?
You can see stars on earth thanks to the earth’s atmosphere and the integration time of a human eye (few milliseconds). The atmosphere turbulence and multiple layers of different temperature will disperse the light beams coming from each star due to a series of refraction effect. After few milliseconds, the human eye would have observed many photons coming from the star that have been dispersed on slightly different angles each other- it looks like that the light beam of stars has been spread. And the diameter of this ‘stain’ on your retina is comparable to human eye resolution.. You can see it !!
