![]() The halo is located on the outer edge of the galaxy. The disk component is both the shape of the galaxy and where new stars form in the galaxy. It is spherically shaped, and only contains old stars. The bulge is housed at the center of the galaxy. These types of galaxies are classified by their 3 main components – a disk, bulge, and halo. Of all the known galaxies in the universe, 77% of them are classified as spiral galaxies. Named for their shape, spiral galaxies are the most common type of galaxy in the universe. The following image of the Whirlpool Galaxy is one of my favorites. ![]() To accomplish these detailed galaxy portraits, I take long-exposure images using a monochrome camera on an equatorial telescope mount. Over the years I have photographed several galaxies from my backyard using my camera and telescope. If you want to see some of the most incredible galaxy photos ever taken, be sure to visit the Hubble Space Telescope Image Archives: Galaxies. This shape classification of galaxies was created by Edwin Hubble in 1926 which he laid out in a diagram called the Hubble Tuning Fork, because of the diagram’s resemblance in shape to a tuning fork. The other general classifications of galaxies include spiral galaxies, elliptical galaxies, and irregular galaxies. Within galaxies, there are also planets, black holes, moons, comets, and dark matter.įor example, the Milky Way, the solar system in which we reside, is classified as a barred spiral galaxy because of its general spiral shape accompanied by a bar and disk of stars at the center. Although these are the four main types, there are various types of galaxies and the way in which they are classified is by their shape.Ī galaxy is a cluster of stars, gas, and dust that are kept together by the force of gravity. There are four distinct types of galaxies in the universe, elliptical, spiral, barred spiral, and irregular. Follow us on Twitter Spacedotcom and on Facebook. The Hubble data used to create the image was collected as part of other work on Arp galaxies and supernovas, according to the statement.įollow Samantha Mathewson. NASA shared the new photo of NGC 1961 on Sept. ![]() With a medium-sized nucleus, NGC 1961 falls between an unbarred and barred spiral galaxy. Hubble Space Telescope photo reveals stunning mix of young and old starsĬlassified as an intermediate spiral galaxy, NGC 1961 lacks a well-defined central bar-shaped structure made of stars, which typically acts like a funnel, pulling matter into the galaxy's core from the surrounding accretion disk. ![]() The Milky Way arches over ESO's Very Large Telescope in amazing panorama Star cluster glitters in new Hubble Space Telescope photo The recent Hubble observations suggest NGC 1961 is a fairly common type of AGN that emits low-energy-charged particles, NASA officials wrote in the statement. The supermassive black hole pulls in material from its surroundings and releases vast amounts of radiation in the form of bright jets and winds, which fuel the galaxy's active nucleus. It is an intermediate spiral galaxy located 180 million light-years from Earth.ĪGN galaxies have very bright centers that can outshine the rest of the galaxy due to the presence of a supermassive black hole at its core. This stunning photo of the spiral galaxy NGC 1961 was captured by the Hubble Space Telescope and released on Sept. ![]()
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