Question

What is a black hole????
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Answer 1

Answer:

A black hole is a region of spacetime where gravity is so strong that nothing—no particles or even electromagnetic radiation such as light—can escape from it. The theory of general relativity predicts that a sufficiently compact mass can deform spacetime to form a black hole.

Answer 2

ᴀ ʙʟᴀᴄᴋ ʜᴏʟᴇ ɪꜱ ᴀ ʀᴇɢɪᴏɴ ᴏꜰ ꜱᴘᴀᴄᴇᴛɪᴍᴇ ᴡʜᴇʀᴇ ɢʀᴀᴠɪᴛʏ ɪꜱ ꜱᴏ ꜱᴛʀᴏɴɢ ᴛʜᴀᴛ ɴᴏᴛʜɪɴɢ—ɴᴏ ᴘᴀʀᴛɪᴄʟᴇꜱ ᴏʀ ᴇᴠᴇɴ ᴇʟᴇᴄᴛʀᴏᴍᴀɢɴᴇᴛɪᴄ ʀᴀᴅɪᴀᴛɪᴏɴ ꜱᴜᴄʜ ᴀꜱ ʟɪɢʜᴛ—ᴄᴀɴ ᴇꜱᴄᴀᴘᴇ ꜰʀᴏᴍ ɪᴛ.