https://padlet.com/s1930821/pjmiapn54d0e2u89 GALAXIES terra,Joshua,Audrina,Yahelis,socorro en-us 2021-04-15 18:20:50 UTC 2021-04-16 18:26:21 UTC hello@padlet.com https://padlet.net/icons/png/1f4ab.png Isolated_J https://padlet.com/s1930821/pjmiapn54d0e2u89/wish/1422614161 Spiral galaxies are twisted collections of stars and gas that often have beautiful shapes and are made up of hot young stars. ... Most spiral galaxies contain a central bulge surrounded by a flat, rotating disk of stars.]]> 2021-04-15 18:37:39 UTC https://padlet.com/s1930821/pjmiapn54d0e2u89/wish/1422614161 s1800016 https://padlet.com/s1930821/pjmiapn54d0e2u89/wish/1422626631 An elliptical galaxy is a type of galaxy with an approximately ellipsoidal shape and a smooth, nearly featureless image. They are one of the three main classes of galaxy described by Edwin Hubble in his Hubble sequence and 1936 work The Realm of the Nebulae, along with spiral and lenticular galaxies.]]> 2021-04-15 18:40:22 UTC https://padlet.com/s1930821/pjmiapn54d0e2u89/wish/1422626631 s18021001 https://padlet.com/s1930821/pjmiapn54d0e2u89/wish/1422645183 An irregular galaxy is a galaxy that does not have a distinct regular shape, unlike a spiral or an elliptical galaxy. Irregular galaxies do not fall into any of the regular classes of the Hubble sequence, and they are often chaotic in appearance, with neither a nuclear bulge nor any trace of spiral arm structure.]]> 2021-04-15 18:44:35 UTC https://padlet.com/s1930821/pjmiapn54d0e2u89/wish/1422645183 s2001247 https://padlet.com/s1930821/pjmiapn54d0e2u89/wish/1422687177 The Milky Way – the galaxy that includes Earth and our solar system is an example of a spiral galaxy. Approximately two-thirds of spiral galaxies also contain a bar structure through their center, as does the Milky Way. The disk of stars orbiting the bulge separates into arms that circle the galaxy.]]> 2021-04-15 18:54:25 UTC https://padlet.com/s1930821/pjmiapn54d0e2u89/wish/1422687177 Isolated_J https://padlet.com/s1930821/pjmiapn54d0e2u89/wish/1426695417  a galaxy's spiral structure originates as a density wave emanating from the galactic center. The idea is that the entire disk of a galaxy is filled with material. The spiral arms of a galaxy mark where in the galaxy the density wave recently passed, causing new stars to form and burn brightly.

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