ๅฐ็ใฎใฆใงใใซใกใฉใ็ซๆใฎ่ช่ปขใๆใใ
Earth Webcam Catches Mars Rotation
็ซๆใฏใใใชใซ็ถบ้บใซใฏ่ฆใใพใใใไปๅคใใๆฐๆฅ้ใ็ซๆใ็ด6ไธๅนดใถใใซๅฐ็ใซๆๆฅ่ฟใใใฎใงใ็งใใกใฎๆๆใฎ้ฃไบบใใใใพใงใงไธ็ชใใ่ฆใใใจใใงใใใใใใใพใใใใใ ใใใใใปใฉๅคใใฎๆง้ ใ่ฆใใใใ็ซๆใใใใชใซ็ญใๆ้ใงใใใปใฉๅคงใใ่ช่ปขใใใใใใจใฏๆๅพ
ใใชใใงใใ ใใใไธ่จใฎ20ใใฌใผใ ใฎๅ็ปใฏใ่ฃๅบญใฎใฆใงใใซใกใฉใงๆฎๅฝฑใใ1000ใใฌใผใ ใ็ถฟๅฏใซไฝ็ฝฎๅใใใ่ฟฝๅ ใใใใธใฟใซใทใผใฑใณในๅใใฆไฝๆใใใพใใใ็ปๅใงใฏใ็ซๆใใฟใคใ ใฉใในใทใผใฑใณในใง่ช่ปขใใฆใใใใใซ่ฆใใพใใใๅใใฌใผใ ใฏๅฎ้ใฎๆ้ใง30ๅ้้ใงใใๅฎ้ใซใฏใ็ซๆใฎ1ๅใฎ่ช่ปข๏ผ็ซๆใฎ1ๆฅ๏ผใฏใๅฐ็ใฎ1ๆฅใใ็ด40ๅ้ทใใ ใใงใใๅฐๅๆ้ ้กใใๆใกใฎๆนใฏใ็ซๆใๅฎ้ใซใฉใฎใใใซ่ฆใใใใใ่ฆงใใ ใใใ
ๅๆ๏ผEnglish๏ผ
Mars won't look this good. Tonight and over the next few days, when Mars is at its closest approach to Earth in nearly 60,000 years, you might get your best view ever of our planetary neighbor. Please, though, don't expect to see this much structure, or expect to see Mars rotate so much in so brief a period. The above 20-frame movie was created from 1000 frames of a backyard webcam that were meticulously aligned, added, and digitally sequenced. Pictured, Mars appears to rotate in a time-lapse sequence, with each frame separated by 30 minutes of real time. In reality, one full Martian rotation -- a Martian day -- is only about 40 minutes longer than an Earth day. For those with access to a small telescope, here is how mars will really look.
๏ผผ ใใฎๆๅใๅฎๅฎไปฒ้ใซใทใงใข ๏ผ
ๅฎๅฎใXใงใทใงใข
ยฉ NASA / APOD