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Astronomy Picture of the Day 11-21-02
| Robert Nemiroff and Jerry Bonnell
Posted on 11/21/2002 1:05:50 PM PST by petuniasevan
Astronomy Picture of the Day
Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
2002 November 21
Starburst Galaxy M94
Credit & Copyright: Hillary Mathis & N.A.Sharp (NOAO), AURA, NSF
Explanation: What could cause the center of M94 to be so bright? Spiral galaxy M94 has a ring of newly formed stars surrounding its nucleus, giving it not only an unusual appearance but also a strong interior glow. A leading progenitor hypothesis holds that an elongated knot of stars known as a bar rotates in M94 and has generated a burst of star formation in the form of an outward moving ring. M94, pictured above digitally sharpened, spans about 30,000 light years, lies about 15 million light years away, and can be seen with a small telescope toward the constellation of Canes Venatici.
TOPICS: Astronomy; Astronomy Picture of the Day; Science
KEYWORDS: astronomy; bar; bright; canesvenatici; dust; formation; galaxy; gas; m94; nucleus; photography; spiral; star; stars
Astronomy Fun Fact:
"Canes Venatici" is Latin for "greyhounds". In legend these help Boötes the Herdsman in his pursuit of Ursa Major (the Great Bear) around the North Pole.
To: MozartLover; Joan912; NovemberCharlie; snowfox; Dawgsquat; viligantcitizen; theDentist; ...
Worth the wait. Thanks.
Sorry I'm late. I couldn't stay up this time; had to post after work.
Thank you & Bttt
posted on 11/21/2002 3:49:34 PM PST
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