NASA’s Hubble Space Telescope captured the image of the spiral galaxy known as ESO 498-G5. One interesting feature of this galaxy is that its spiral arms wind all the way into the center, so that ESO 498-G5’s core looks like a bit like a miniature spiral galaxy. This sort of structure is in contrast to the elliptical star-filled centers of many other spiral galaxies, which instead appear as glowing masses. Astronomers refer to the distinctive spiral-like bulge of galaxies such as ESO 498-G5 as disc-type bulges, or pseudobulges, while bright elliptical centers are called classical bulges.
This image, which shows NGC 4980, is composed of exposures taken in visible and infrared light by Hubble’s Advanced Camera for Surveys. The image is approximately 3.3 by 1.5 arcminutes in size.NGC 4980 is a spiral galaxy in the southern constellation of Hydra. The shape of NGC 4980 appears slightly deformed, something which is often a sign of recent tidal interactions with another galaxy. In this galaxy’s case, however, this appears not to be the case as there are no other galaxies in its immediate vicinity.
New study finds that supernova explosions and the jets of a monstrous black hole are scattering a galaxy’s star-making gas like a cosmic leaf blower. The findings, which relied on ultraviolet observations from NASA’s Galaxy Evolution Explorer and a host of other instruments, fill an important gap in the current understanding of galactic evolution. It has long been known that gas-rich spiral galaxies like our oun smash together to create elliptical galaxies such as the one observed in the study.
An international team of astronomers from Australia, Germany, Switzerland, and Finland has discovered a rare dwarf galaxy, called LEDA 074886, which has a striking resemblance to an emerald cut diamond. The astronomers discovered the rectangular shaped galaxy within a group of 250 galaxies some 70 million light years away. As said Associate Professor Alister Graham from Swinburne University of Technology in the Universe around us, most galaxies exist in one of three forms: spheroidal, disc-like, or lumpy and irregular in appearance.
An international group of astronomers, using multiple telescopes, was recently able to collect an impressive view of the Ring of Fire at the core of the spiral galaxy NGC 4151.
The European Southern Observatory’s VLT Survey Telescope has captured the nearby spiral galaxy NGC 253 in sharp detail.
Skywatcher Tunc Tezel this summer on the island of Mangaia in the South Pacific take an image of our own Milky Way galaxy, in whcih our galaxy gorgeous shines.
After nine months of number crunching on a powerful supercomputer, a beautiful spiral galaxy matching our own Milky Way emerged from a computer simulation of the physics involved in galaxy formation and evolution. The simulation, called Eris, by researchers at the University of California, Santa Cruz, and the Institute for Theoretical Physics in Zurich solves a longstanding problem that had led some to question the prevailing cosmological model of the universe.
With the help NASA’s Chandra X-ray Observatory astronomers discovered the first pair of supermassive black holes in a spiral galaxy similar to the Milky Way.