Question

Why might you need a planisphere to help determine which constellations are visible in the sky at a certain time of year?

Answer 1

Explanation:

A planisphere is a rotating star locator. It’s a virtually indispensable tool for beginning stargazers. Want to learn the stars and constellations? A planisphere is a great place to start. All you have to do is to wheel it around until the time and date match up. Presto! At the drop of a hat, the stars and constellations on the planisphere instantly match those in the real sky. Unlike most sky charts, the wizardly planisphere never goes out of date, and always stays in step with the motions of the heavens.

Answer 2

$\huge \bf \red{ANSWER}$

, ᴀ ᴘʟᴀɴɪꜱᴘʜᴇʀᴇ ɪꜱ ᴀ ꜱᴛᴀʀ ᴄʜᴀʀᴛ ᴀɴᴀʟᴏɢ ᴄᴏᴍᴘᴜᴛɪɴɢ ɪɴꜱᴛʀᴜᴍᴇɴᴛ ɪɴ ᴛʜᴇ ꜰᴏʀᴍ ᴏꜰ ᴛᴡᴏ ᴀᴅᴊᴜꜱᴛᴀʙʟᴇ ᴅɪꜱᴋꜱ ᴛʜᴀᴛ ʀᴏᴛᴀᴛᴇ ᴏɴ ᴀ ᴄᴏᴍᴍᴏɴ ᴘɪᴠᴏᴛ. ɪᴛ ᴄᴀɴ ʙᴇ ᴀᴅᴊᴜꜱᴛᴇᴅ ᴛᴏ ᴅɪꜱᴘʟᴀʏ ᴛʜᴇ ᴠɪꜱɪʙʟᴇ ꜱᴛᴀʀꜱ ꜰᴏʀ ᴀɴʏ ᴛɪᴍᴇ ᴀɴᴅ ᴅᴀᴛᴇ. ɪᴛ ɪꜱ ᴀɴ ɪɴꜱᴛʀᴜᴍᴇɴᴛ ᴛᴏ ᴀꜱꜱɪꜱᴛ ɪɴ ʟᴇᴀʀɴɪɴɢ ʜᴏᴡ ᴛᴏ ʀᴇᴄᴏɢɴɪᴢᴇ ꜱᴛᴀʀꜱ ᴀɴᴅ ᴄᴏɴꜱᴛᴇʟʟᴀᴛɪᴏɴꜱ.