Question

${\textsf{\large{\textbf{\color{blue}{Que}{\color{purpule}{st}{\color{violet}{ion:-}}}}}}}$
• What is a Light year?
• How much time does it involves?

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Answer 1

Answer:

A light-year is the distance light travels in one year. How far is that? Multiply the number of seconds in one year by the number of miles or kilometers that light travels in one second, and there you have it: one light-year. It's about 5.88 trillion miles (9.5 trillion km).

Answer 2

❀Aɳടɯҽɾ❀

• Wʜᴀᴛ ɪs ᴀ Lɪɢʜᴛ ʏᴇᴀR:-

❥❥❥Tʜᴇ ʟɪɢʜᴛ-ʏᴇᴀʀ ɪs ᴀ ᴜɴɪᴛ ᴏғ ʟᴇɴɢᴛʜ ᴜsᴇᴅ ᴛᴏ ᴇxᴘʀᴇss ᴀsᴛʀᴏɴᴏᴍɪᴄᴀʟ ᴅɪsᴛᴀɴᴄᴇs ᴀɴᴅ ɪs ᴇqᴜɪᴠᴀʟᴇɴᴛ ᴛᴏ ᴀʙᴏᴜᴛ ᴛʀɪʟʟɪᴏɴ ᴋɪʟᴏᴍᴇᴛʀᴇs ᴏʀ 5.88 ᴛʀɪʟʟɪᴏɴ ᴍɪʟᴇs. 9.46 As ᴅᴇғɪɴᴇᴅ ʙʏ ᴛʜᴇ Iɴᴛᴇʀɴᴀᴛɪᴏɴᴀʟ Asᴛʀᴏɴᴏᴍɪᴄᴀʟ Uɴɪᴏɴ, ᴀ ʟɪɢʜᴛ-ʏᴇᴀʀ ɪs ᴛʜᴇ ᴅɪsᴛᴀɴᴄᴇ ᴛʜᴀᴛ ʟɪɢʜᴛ ᴛʀᴀᴠᴇʟs ɪɴ ᴠᴀᴄᴜᴜᴍ ɪɴ ᴏɴᴇ Jᴜʟɪᴀɴ ʏᴇᴀʀ.

• Hᴏᴡ ᴍᴜᴄʜ ᴛɪᴍᴇ ᴅᴏᴇs ɪᴛ ɪɴᴠᴏʟᴠᴇs:-

❥❥❥Lɪɢʜᴛ-ʏᴇᴀʀ ɪs ᴛʜᴇ ᴅɪsᴛᴀɴᴄᴇ ʟɪɢʜᴛ ᴛʀᴀᴠᴇʟs ɪɴ ᴏɴᴇ ʏᴇᴀʀ. Lɪɢʜᴛ ᴢɪᴘs ᴛʜʀᴏᴜɢʜ ɪɴᴛᴇʀsᴛᴇʟʟᴀʀ sᴘᴀᴄᴇ ᴀᴛ 186,000 ᴍɪʟᴇs (300,000 ᴋɪʟᴏᴍᴇᴛᴇʀs) ᴘᴇʀ sᴇᴄᴏɴᴅ ᴀɴᴅ 5.88 ᴛʀɪʟʟɪᴏɴ ᴍɪʟᴇs (9.46 ᴛʀɪʟʟɪᴏɴ ᴋɪʟᴏᴍᴇᴛᴇʀs) ᴘᴇʀ ʜᴏᴜʀ.