๐Ÿš€ ๅฎ‡ๅฎ™ใฎ่จ˜ๆ†ถใƒปใ‚ซใƒฌใƒณใƒ€ใƒผๆคœ็ดข
ใใ‚‡ใ† ใƒฉใƒณใƒ€ใƒ 
่ปŠ้“ใ‚ขใƒŠใƒฌใƒณใƒž Driveway Analemma
ๅคช้™ฝใฏๆฏŽๆ—ฅๅŒใ˜็ฉบใฎไฝ็ฝฎใซๆˆปใฃใฆใใ‚‹ใฎใงใ—ใ‚‡ใ†ใ‹๏ผŸใ„ใ„ใˆใ€‚ใ‚ˆใ‚Š่ฆ–่ฆš็š„ใช็ญ”ใˆใฏใ‚ขใƒŠใƒฌใƒณใƒžใงใ™ใ€‚ใ“ใ‚Œใฏใ€1ๅนด้–“ๅŒใ˜ๅ ดๆ‰€ใงๅŒใ˜ๆ™‚้–“ใซๆ’ฎๅฝฑใ•ใ‚ŒใŸ็ฉบใฎ็”ปๅƒใ‚’ๅˆๆˆใ—ใŸใ‚‚ใฎใงใ™ใ€‚ๅฎŒๆˆใ™ใ‚‹ใจใ€ๅคช้™ฝใŒ็ฉบใซ8ใฎๅญ—ใ‚’ๆใ„ใฆใ„ใ‚‹ใ“ใจใŒใ‚ใ‹ใ‚Šใพใ™ใ€‚ใŸใ ใ—ใ€ใ“ใ“ใง็ดนไป‹ใ™ใ‚‹็ใ—ใ„ใ‚ขใƒŠใƒฌใƒณใƒžใฏใ€ๅคช้™ฝใ‚’็›ดๆŽฅๅ†™ใ—ใŸใ‚‚ใฎใงใฏใ‚ใ‚Šใพใ›ใ‚“ใ€‚ๅๅฏพๆ–นๅ‘ใ‚’่ฆ‹ใ‚‹ใ“ใจใงไฝœๆˆใ•ใ‚Œใพใ—ใŸใ€‚ๅฟ…่ฆใชใฎใฏใ€ๆ™ดใ‚ŒใŸๆ—ฅใฎๅŒใ˜ๆ™‚้–“ใซใ€ๅฎถใฎ็ซฏใฎๅฝฑใŒ็ง้“ใฎใฉใ“ใซใ‚ใ‚‹ใ‹ใ‚’่จ˜้Œฒใ™ใ‚‹ใ“ใจใ ใ‘ใงใ—ใŸใ€‚็ฑณๅ›ฝใ‚ณใƒญใƒฉใƒ‰ๅทžใƒ•ใ‚กใƒซใ‚ณใƒณใง3ๆœˆใ‹ใ‚‰ใ€ๅ†™็œŸๅฎถใฏๅˆๅพŒ1ๆ™‚ใฎๅฝฑใฎไฝ็ฝฎใ‚’็ณป็ตฑ็š„ใซ่จ˜้Œฒใ—ใพใ—ใŸใ€‚ใ‚ใ‚‹ใƒ•ใƒฌใƒผใƒ ใซใฏใ€ๅ†™็œŸๅฎถ่‡ช่บซใ‚‚ๅ†™ใฃใฆใ„ใพใ™ใ€‚ใ“ใฎใ‚ขใƒŠใƒฌใƒณใƒžใฏ2025ๅนดใซๅฎŒๆˆใ—ใพใ™ใŒใ€็‰นๅˆฅใชๆฉŸๆใ‚’ไฝฟใ‚ใšใซใ€ไปŠๆ—ฅใ‹ใ‚‰ใงใ‚‚็ง้“ใฎใ‚ขใƒŠใƒฌใƒณใƒžใ‚’ๆใๅง‹ใ‚ใ‚‹ใ“ใจใŒใงใใพใ™ใ€‚
ๅŽŸๆ–‡๏ผˆEnglish๏ผ‰
Does the Sun return to the same spot on the sky every day?ย  No.ย  A more visual answer is an analemma, a composite of sky images taken at the same time and from the same place over a year.ย  At completion, you can see that the Sun makes a figure 8 on the sky. The featured unusual analemma does not, however, picture the Sun directly: it was created by looking in the opposite direction. All that was required was noting where the shadow of an edge of a house was in the driveway every clear day at the same time. Starting in March in Falcon, Colorado, USA, the photographer methodically marked the shadow's 1 pm location. In one frame you can even see the photographer himself. Although this analemma will be completed in 2025, you can start drawing your own driveway analemma -- using no fancy equipment -- as soon as today.

๏ผผ ใ“ใฎๆ„Ÿๅ‹•ใ‚’ๅฎ‡ๅฎ™ไปฒ้–“ใซใ‚ทใ‚งใ‚ข ๏ผ

ๅฎ‡ๅฎ™ใ‚’Xใงใ‚ทใ‚งใ‚ข
ยฉ Nick Wright / APOD