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ๅญฆใใใณX็ทใง่ฆใใญใฃใใใขใคๆ้ฒ
The Cat's Eye Nebula in Optical and X-ray
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ใซใฏ็ซใฎ็ฎใใใ่
ใซใฏๅทจๅคงใชๅฎๅฎใฎใปใ่ฒใฎใใใซ่ฆใใใใใใใพใใใๅฎ้ใซใฏใใใใฏๅคช้ฝใฎใใใชๆๆใฎๅฏฟๅฝใฎ็ตใใใซ่ฟใใ็ญใใ่ผใใใๆๆใซๆพๅบใใใใฌในใงๆงๆใใใใ็ฅใใใฆใใไธญใงๆใๆใใใๆใ็ฒพ็ดฐใชๆๆ็ถๆ้ฒใฎไธใคใงใใใใฎๆ้ฒใฎไธญๅฟใซใใๆญปใซใใๆๆใใไธ้ฃใฎ่ฆๅ็ใช็ๆฃใซใใฃใฆๅคๅฑคใใฏใใใๅคๅดใฎๅๅฟๅ็ถใฎๆฎปใๅฝขๆใใๅฏ่ฝๆงใใใใพใใใใใใ็พใใ่ค้ใงใใใชใใๅฏพ็งฐ็ใชๅ
้จๆง้ ใฎๅฝขๆ้็จใฏใใพใ ๅๅใซ่งฃๆใใใฆใใพใใใใใฎ็ปๅใฏใใใใใซๅฎๅฎๆ้ ้กใฎใใธใฟใซ็ปๅๅฆ็ใซใใ็ปๅใจใๅจๅ่ป้ไธใฎใใฃใณใใฉๅคฉๆๅฐใๆใใX็ทๅ
ใๅๆใใใใฎใงใใใใฎ็ฒพๅทงใซๆตฎใใถๅฎๅฎๅใฏใๅน
ใๅๅ
ๅนดไปฅไธใซใๅใณใพใใใใกใใใใใฎ็ซใฎ็ฎใ่ฆใคใใไบบ้กใฏใ็ด50ๅๅนดๅพใซๆๆ็ถๆ้ฒใธใจ้ฒๅใใ้ๅฝใซใใๅคช้ฝใฎ้ๅฝใ็ฎใฎๅฝใใใซใใฆใใใฎใใใใใพใใใ
ๅๆ๏ผEnglish๏ผ
To some it looks like a cat's eye. To others, perhaps like a giant cosmic conch shell. It is actually one of brightest and most highly detailed planetary nebula known, composed of gas expelled in the brief yet glorious phase near the end of life of a Sun-like star. This nebula's dying central star may have produced the outer circular concentric shells by shrugging off outer layers in a series of regular convulsions. The formation of the beautiful, complex-yet-symmetric inner structures, however, is not well understood. The featured image is a composite of a digitally sharpened Hubble Space Telescope image with X-ray light captured by the orbiting Chandra Observatory. The exquisite floating space statue spans over half a light-year across. Of course, gazing into this Cat's Eye, humanity may well be seeing the fate of our sun, destined to enter its own planetary nebula phase of evolution ... in about 5 billion years.
๏ผผ ใใฎๆๅใๅฎๅฎไปฒ้ใซใทใงใข ๏ผ
ๅฎๅฎใXใงใทใงใข
ยฉ NASA / APOD