Question

What is the universe expanding into??


copycats kindly stay away!!​

Answer 1

The expansion of the universe is the increase in distance between any two given gravitationally unbound parts of the observable universe with time. It is an intrinsic expansion whereby the scale of space itself changes. The universe does not expand "into" anything and does not require space to exist "outside" it. 

❤MissAstonish❤

Answer 2

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ᴛʜᴇ ᴍᴀɪɴ ʀᴇᴀsᴏɴ ᴏғ ᴜɴɪᴠᴇʀsᴇ ᴇxᴘᴀɴᴅɪɴɢ ɪs ᴅᴜᴇ ᴛᴏ ᴅᴀʀᴋ ᴍᴀᴛᴛᴇʀ ʀᴏʟᴇ ᴏғ ᴅᴀʀᴋ ᴍᴀᴛᴛᴇʀ ɪ'ᴅs ᴛᴏ ʙᴏᴜɴᴅ ɢᴀʟᴀxɪᴇs ᴛᴏɢᴇᴛʜᴇʀ ʙᴜᴛ .

ʟᴇᴛ ᴛᴡᴏ ɢᴀʟᴀxɪᴇs ᴀɴᴅ ʙᴛᴡɴ ᴛᴏ ɢᴀʟᴀxɪᴇs ɪs ᴀ ᴇᴍᴘᴛʏ sᴘᴀᴄᴇ ɴᴏ ᴅᴀʀᴋ ᴍᴀᴛᴛᴇʀ ɪs ᴛʜᴇʀ sᴏ ᴛʜᴇ ᴅᴀʀᴋ ᴍᴀᴛᴛᴇʀ ɪɴ ᴛʜᴇ ᴛᴡᴏ ɢᴀʟᴀxɪᴇs ᴄʀᴇᴀᴛ ᴀ ʀᴇᴘᴜʟsɪᴠᴇ ғᴏʀᴄᴇ.

ᴅᴜᴇ ᴛᴏ ᴡʜɪᴄʜ ɢᴀʟᴀxɪᴇs (ɪɴ sᴀᴍᴇ ᴡᴀʏs ᴜɴɪᴠᴇʀsᴇ ᴇxᴀᴘɴᴅɪɴɢ.

ᴀɴᴅ ᴏғ ᴄᴏᴜʀsᴇ:)

Ꮋᴀᴘᴘʏ ɪɴᴛᴇʀɴᴀᴛɪᴏɴᴀʟ ᴀsᴛʀᴏɴᴏᴍʏ ᴅᴀʏ

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