How do we know there are other galaxies
WebNov 18, 2015 · Astronomers have measured the "pulses" of thousands of stars in the distant elliptical galaxy Messier 87, or M87, and were able to use that data to calculate that it is about 10 billion years old, a number that corresponds with previous estimates found using other techniques. WebAnswer (1 of 34): Original Question: Have scientists been to other galaxies? If not, how do they know they exist? Is this supposed to be a serious question, or is the OP just trolling? There are several of the nearer galaxies which can be observed even with a decent pair of binoculars, a figure...
How do we know there are other galaxies
Did you know?
WebAug 6, 2024 · Oct 13, 2016 Hubble Reveals Observable Universe Contains 10 Times More Galaxies Than Previously Thought The universe suddenly looks a lot more crowded, … WebFor the first time, we can scientifically estimate how many galaxies are out there in the Universe. The next step in the great cosmic puzzle is to find and characterize as many of them as...
WebJan 19, 2024 · Another one might look long and flat. Elliptical galaxies contain mostly older stars. That means they often aren't as bright as spiral galaxies. They also have very little … WebApr 12, 2024 · Thus far we’ve sighted just over 500 of these doomed stars in the Milky Way, despite the fact there is an estimated population of between 1,000 and 2,000 in our galaxy.
WebMar 22, 2024 · We know of thousands of planets — called exoplanets — orbiting other stars in our galaxy. When you look up into the night sky, every star you see has, on average, at least one planet. 6 Common Spiral About … WebApr 12, 2024 · Sandro: Galaxies are very complex systems in which a wide range of different processes work on different spatial and temporal scales, so there are many approaches that can be used to better understand the physics of galaxies. So, making it available to many different groups will facilitate the search for more insight.
WebSep 23, 2024 · Astronomers measure the amount of dust in the Milky Way and the dominant colors of the light we see, and they match those we find in other typical spiral galaxies. All of this adds up to give us a picture of the …
WebApr 14, 2024 · The James Webb Space Telescope deep field image showing some of the earliest and most distant galaxies ever seen. Since it started delivering its first results in … chirs heingraphing slope intercept form pdfWebAnswer (1 of 2): We don’t know exactly how old most galaxies are, although there do appear to be some young ones. Of course their subatomic constituents and most of their nuclei, and almost certainly all of the dark matter that dominates them, all has the same age as the rest of the observable un... chirs fundingWeb9) How do we determine the amount of dark matter in elliptical galaxies? A) We measure the orbital velocities of star-forming gas clouds around the outer portions of the galaxy. B) We measure the speeds of stars at different radii from the galactic center and determine how much mass is interior to the orbit. chirs hodgemediaWebMar 13, 2024 · The evidence for supermassive black holes (SMBHs) at the centres of most (if not all) galaxies, is both direct and indirect. Observations of ‘quasars’ – the extremely bright cores of distant galaxies – shows that they’re releasing up to a trillion times the energy of a typical star, all within a volume no bigger than the Solar System. graphing slope intercept phetWeb2 days ago · Sandro: Galaxies are very complex systems in which a wide range of different processes work on different spatial and temporal scales, so there are many approaches … graphing slope intercept form worksheetWebOther galaxies have elliptical shapes, and a few have unusual shapes like toothpicks or rings. The Hubble Ultra Deep Field (HUDF) shows this diversity. Hubble observed a tiny patch of sky (one-tenth the diameter of … graphing slopes pdf