Space telescopes capture a cosmic jellyfish17:46 13 January 2006
"A cosmic jellyfish appears to pulse with light in this multi-wavelength image of the Cartwheel galaxy, compiled from images taken by four space telescopes.
The galaxy probably came by its distinctive shape when a small galaxy – possibly one of the objects at bottom-left of the image – collided with it head-on 100 million years ago. The crash set off ripples in the large galaxy's gas that led to concentric rings of star birth.
"It's like dropping a stone into a pond, only in this case, the pond is the galaxy and the wave is the compression of gas," explains Phil Appleton of the California Institute of Technology in Pasadena, US. "Each wave represents a burst of star formation – the youngest stars are found in the outer ring."
http://www.newscientistspace.com/article.ns?id=dn8582-------
I enjoy the similarity between the look of the star formations (Cosmic Jellyfish) and life here - the first "simple animals". It sounds like they live through a lot of conditions of salinity, temperature, etc. So that's good for
them (more adaptable than WE are - IOW).
And besides - they look cool.
On Jellyfish and "blooms" (sounds like a global warming indicator :shrug: ):
A group of jellyfish is often called a "smack." Many species of jellyfish are also capable of congregating into large swarms or "blooms" consisting of hundreds or even thousands of individuals. The formation of these blooms is a complex process that depends on ocean currents, nutrients, temperature and oxygen content. Jellyfish will sometimes mass breed during blooms, thereby causing large booms in jellyfish population and reportedly raising major ecological concern for a possible jellyfish outbreak.
According to Claudia Mills of the University of Washington, the frequency of these blooms may be attributed to mankind's impact on marine life; she says that the breeding jellyfish may merely be taking the place of already overfished creatures. Jellyfish researcher Marsh Youngbluth further clarifies that "jellyfish feed on the same kinds of prey as adult and young fishes, so if fish are removed from the equation, jellyfish are likely to move in."
Increased nutrient in the water, ascribed to agricultural runoff, has also been cited as an antecedent to the recent proliferation of jellyfish numbers: scientist Monty Graham says, "ecosystems in which there are high levels of nutrient ... provide nourishment for the small organisms on which jellyfish feed. In waters where there is eutrophication, low oxygen levels often result, favoring jellyfish as they thrive in less oxygen-rich water than fish can tolerate. The fact that jellyfish are increasing is a symptom of something happening in the ecosystem."
Areas already majorly affected by jellyfish blooms include the northern Gulf of Mexico, where "moon jellies have formed a kind of gelatinous net that stretches from end to end across the gulf," and the Adriatic Sea.
http://en.wikipedia.org/wiki/JellyfishFried egg jellyfish