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Astronomy Picture of the Day -- The Outer Shells of Centaurus A
| July 01, 2012
| (see photo credit)
Posted on 07/02/2012 2:04:10 PM PDT by SunkenCiv
Explanation: What causes the surrounding shells in peculiar galaxy Cen A? In 2002 a fascinating image of peculiar galaxy Centaurus A was released, processed to highlight a faint blue arc indicating an ongoing collision with a smaller galaxy. Another interesting feature of Cen A, however, is the surrounding system of shells, better visible here in this recently released wider pan from the four meter Blanco telescope at Cerro Tololo Inter-American Observatory. Faint shells around galaxies are not unusual and considered by themselves as evidence of a previous galaxy merger, analogous to water ripples on a pond. An unexpected attribute of these shells is the abundance of gas, which should become separated from existing stars during the collision.
(Excerpt) Read more at 126.96.36.199 ...
TOPICS: Astronomy; Astronomy Picture of the Day; Science
KEYWORDS: apod; astronomy; centaurusa; science
posted on 07/02/2012 2:04:19 PM PDT
To: brytlea; cripplecreek; decimon; bigheadfred; KoRn; Grammy; married21; steelyourfaith; Mmogamer; ...
posted on 07/02/2012 2:07:03 PM PDT
posted on 07/02/2012 2:14:41 PM PDT
(What does it profit a man if he gains the whole world but loses his soul?)
posted on 07/02/2012 2:35:53 PM PDT
by the invisib1e hand
(A Dalmation was spotted trotting down the street...)
That was the destination of the Jupiter 2 before Doctor Smith screwed everything up.
posted on 07/02/2012 3:35:04 PM PDT
by Happy Rain
("Obama is doing to America what Bill Clinton did to Monica Lewinsky--"He's Riden' Dirty!"')
To: Happy Rain
Alpha Centauri is a binary star system about 4.3 light years away, with a red dwarf, called Proxima, passing by. Centaurus A is a galaxy about 10-16 Million light years away. They may be close together in our sky, but they are far apart in space
posted on 07/02/2012 4:22:46 PM PDT
("The more corrupt the state, the more laws." Tacitus, Publius Cornelius)
To: Happy Rain
:’) He was a miserable failure as a saboteur.
posted on 07/02/2012 5:28:10 PM PDT
Bump, Mr. Civilizations! I’m glad that the APOD’s back.
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