Question

To an astronaut, why does the sky appear dark instead of blue?

Answer 1

Explanation:

The sky appears dark to the astronaut as scattering does not takes place at very high altitudes due to absence of atmosphere.This is also known as Atmospheric Refraction

Answer 2

ᴛʜᴇ sᴋʏ ᴀᴘᴘᴇᴀʀ ᴅᴀʀᴋ ᴏɴsᴛᴇᴀᴅ ᴏғ ʙʟᴜᴇ ᴛᴏ ᴀɴ ᴀsᴛʀᴏɴᴀᴜᴛ ʙᴇᴄᴀᴜsᴇ....ɴᴏ ᴀᴛᴍᴏsᴘʜᴇʀᴇ ɪs ᴘʀᴇsᴇɴᴛ ᴏᴜᴛsɪᴅᴇ ᴛʜᴇ ᴇᴀʀᴛʜ ᴀɴᴅ ʜᴇɴᴄᴇ sᴄᴀᴛᴛᴇʀɪɴɢ ᴏғ ʟɪɢʜᴛ ɪs ɴᴏᴛ ᴘᴏssɪʙʟᴇ...ᴛʜᴇʀᴇғᴏʀᴇ ɪᴛ ᴡɪʟʟ ᴀᴘᴘᴇᴀʀ ᴅᴀʀᴋ