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Daily Astronomy Blurb: Reflections on vdB 9

Centered in a well-composed celestial still life, pretty, blue vdB 9 is the 9th object in Sidney van den Bergh's 1966 catalog of reflection nebulae. It shares this telescopic field of view, about twice the size of a full moon on the sky, with stars and dark, obscuring dust clouds in the northerly constellation Cassiopeia. Cosmic dust is preferentially reflecting blue starlight from embedded, hot star SU Cassiopeiae, giving vdB 9 the characteristic bluish tint associated with a classical reflection nebula. SU Cas is a Cepheid variable star, though even at its brightest it is just too faint to be seen with the unaided eye. Still Cepheids play an important role in determining distances in our galaxy and beyond. At the star's well-known distance of 1,540 light-years, this cosmic canvas would be about 24 light-years across.
© apod.nasa.gov

ACAC News


Posted 2 days ago

Athena Community Astronomy Club

Glaretum
Opportunity 14 años y 293 días
Crédito: NASA
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Posted 3 weeks ago

Athena Community Astronomy Club

We must remember them.On Feb. 1 2003, the Columbia space crew lost their lives exploring space.

George W. Bush addressed the nation and said:
"In an age when space flight has come to seem almost routine, it is easy to overlook the dangers of travel by rocket, and the difficulties of navigating the fierce outer atmosphere of the Earth. These astronauts knew the dangers, and they faced them willingly, knowing they had a high and noble purpose in life. Because of their courage and daring and idealism, we will miss them all the more."
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AGM and regular January meeting on Sunday, 27th, from 7-9 p.m. at Wilmot Community Centre. ... See MoreSee Less

Missed the lunar eclipse due to storm conditions. Just as well, apparently, as Global National news showed a graphic of the event with the Earth, Moon, and Sun all nicely lined up... in that order.
I can forgive the understandable ignorance of scale, but they could at least have gotten the alignment correct as it is the basis of the event.
pffffft.
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Posted 2 months ago

Athena Community Astronomy Club

AGM coming at the last Sunday in January. Members, let Michael know if you are interested in serving for executive positions. Thanks. ... See MoreSee Less