Explanation: This colorful skyscape
features the dusty, reddish glow of Sharpless catalog emission region Sh2-155,
the Cave Nebula. About 2,400 light-years away, the scene lies along the plane
of our Milky Way Galaxy toward the royal northern constellation of Cepheus.
Astronomical explorations of the region reveal that it has formed at the
boundary of the massive Cepheus B molecular cloud and the hot, young, blue
stars of the Cepheus OB 3 association. The bright rim of ionized hydrogen gas
is energized by the radiation from the hot stars, dominated by the bright blue
O-type star above picture center. Radiation driven ionization fronts are likely
triggering collapsing cores and new star formation within. Appropriately sized
for a stellar nursery, the cosmic cave is over 10 light-years across.
هیچ نظری موجود نیست:
ارسال یک نظر