Astronomy Picture of Day: Interstellar Dust# Astronomy - 天文
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Interstellar Dust Bunnies of NGC 891
Explanation: What is going on in NGC 891? This galaxy appeared previously to be very
similar to our own Milky Way Galaxy: a spiral galaxy seen nearly edge-on. However, recent
high-resolution images of NGC 891's dust show unusual filamentary patterns extending well
away from its Galactic disk. This interstellar dust was probably thrown out of the galactic
disk toward the halo by stellar supernovae explosions. Because dust is so fragile, its
appearance after su
Explanation: What is going on in NGC 891? This galaxy appeared previously to be very
similar to our own Milky Way Galaxy: a spiral galaxy seen nearly edge-on. However, recent
high-resolution images of NGC 891's dust show unusual filamentary patterns extending well
away from its Galactic disk. This interstellar dust was probably thrown out of the galactic
disk toward the halo by stellar supernovae explosions. Because dust is so fragile, its
appearance after su