X-rays : galaxiesIf mass and angular momentum were conserved in cooling flows associated with luminous, slowly rotating elliptical galaxies, the inflowing hot gas would spin up, resulting in disks of cold gas and X-ray images that are highly flattened along the equatorial plane out to several ...
Alternatively, elliptical galaxies — what Hubble called early-type galaxies — appear to be older. Instead of rotating, like disk galaxies, stars in elliptical galaxies have more random movement, according to Robert Bassett, an observational astrophysicist who studies galaxy evolution at Swinburne Univ...
The same physical forces also affect the look of the pointed "arms" that can be seen around the rims of such galaxies. "The types of spiral arms are almost certainly related to the rotation rate," GuhaThakurta says. Rapidly rotating systems tend to have a ring of small, tight arms. In...
Having a catalog of local group galaxies would be nice. I don't know how large a memory you have or how fast it can access a particular galaxy in a 3+million object database. Those are always considerations, of course. peleuba and brickbots like this #150 Jon Isaacs ISS Posts:118,76...
Furthermore, "we do know that age is affected by environment," said team member Jesse van de Sande, who is also from the University of Sydney. "If a galaxy falls into a dense environment, it will tend to shut down star formation. So galaxies in denser environments are, on average, old...
Q: If the universe is expanding and all the galaxies are moving away from one another, how is it possible for galaxies to collide? Q: What happens when you fall into a blackhole? Q: Is the total complexity of the universe growing, shrinking or staying th...
Why do books say that the farthest galaxies we can see in opposite directions are not within each other's visible universe, when Einstein's addition of velocities law shows that any two velocities add up to a velocity less than that of light? Assume that you are standing...
Why are old, large craters on Ganymede and Callisto much shallower than those on the Moon?Lunar Craters:Naked eye observation of our own Moon reveal dark grey patches, roughly circular in shape, against the bright white background of the Moon. These are craters, created...
Find out all about these elusive ripples in space-time and why the latest detection has astronomers celebrating.
The Milky Way, our cosmic home, contains between 100 and 400 billion stars. The galaxy is thought to have formed 13.6 billion years ago, originating from a rotating cloud of gas composed of hydrogen and helium. The gas then accumulated over billions of years in a rotating disk, where stars...