Question

what is galaxy ???????​

Answer 1

a system of millions or billions of stars, together with gas and dust, held together by gravitational attraction.

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Answer 2

Answer:

ᴀ ɢᴀʟᴀxʏ ɪs ᴀ ʜᴜɢᴇ ᴄᴏʟʟᴇᴄᴛɪᴏɴ ᴏғ ɢᴀs, ᴅᴜsᴛ, ᴀɴᴅ ʙɪʟʟɪᴏɴs ᴏғ sᴛᴀʀs ᴀɴᴅ ᴛʜᴇɪʀ sᴏʟᴀʀ sʏsᴛᴇᴍs, ᴀʟʟ ʜᴇʟᴅ ᴛᴏɢᴇᴛʜᴇʀ ʙʏ ɢʀᴀᴠɪᴛʏ. ... ᴀ ɢᴀʟᴀxʏ ɪs ᴀ ʜᴜɢᴇ ᴄᴏʟʟᴇᴄᴛɪᴏɴ ᴏғ ɢᴀs, ᴅᴜsᴛ, ᴀɴᴅ ʙɪʟʟɪᴏɴs ᴏғ sᴛᴀʀs ᴀɴᴅ ᴛʜᴇɪʀ sᴏʟᴀʀ sʏsᴛᴇᴍs. ᴀ ɢᴀʟᴀxʏ ɪs ʜᴇʟᴅ ᴛᴏɢᴇᴛʜᴇʀ ʙʏ ɢʀᴀᴠɪᴛʏ.

ᴍᴀʀᴋ ᴍᴇ ᴀs ᴀ ʙʀᴀɪɴʟɪᴇsᴛ