How do we know about other galaxies

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August undefined, 2024

WebOct 22, 2024 · There are several variations on this, many of which are used to measure distances to stars in other galaxies. Period-luminosity relation: Some stars are regular pulsators, meaning their intensity changes periodically. The physics of their pulsations is such that the period of one oscillation is related to the luminosity of the star. 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 dust and gas. Elliptical galaxies are the largest and most common galaxies observed. They make up about 20% of nearby galaxies. Irregular galaxies are just that: irregular.

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Web2 days ago · One of these is Maisie’s galaxy, which is seen at a redshift of 11.4, about 400 million years after the big bang, and was named for Finkelstein’s daughter. “She was very excited when I told ... WebWhen we look at very distant galaxies, we see a completely different picture. Many of these galaxies tend to be small and clumpy, often with a lot of star formation occurring in the … try glasses on your face

ELI5: How can we "see" other galaxies? : r/explainlikeimfive - Reddit

Web३३ ह views, ४८२ likes, १.२ ह loves, १.७ ह comments, ३७४ shares, Facebook Watch Videos from OoopsSorry Gaming: GOOD MORNING TOL! !Notify WebAug 14, 2024 · A globular cluster contains old stars. Globular clusters are tightly packed, symmetrical collections of stars. And they orbit mostly in the extended stellar halos surrounding most spiral galaxies ... WebMar 13, 2015 · Or dark matter galaxies which don't have enough gas to form stars. They're just giant blobs of dark matter. Astronomers even use dark matter as gravitational lenses to study more distant... philip woodley

How many galaxies are there and how do we even know this?

How do we know about other galaxies

If matter and antimatter repel, how do we know other galaxies …

WebIn other words, wherever you look in the sky, you will see the same things: galaxies. So, if there are a million galaxies in one direction, then there are about as many in any other direction you look at. Simple extrapolation is the final step. WebFeb 25, 2024 · The current width of the observable universe is about 90 billion light-years. And presumably, beyond that boundary, there's a bunch of other random stars and galaxies. But past that? It's hard to ...

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WebMar 22, 2024 · There are three general kinds of galaxies: elliptical, spiral, and irregular. The Milky Way is a spiral galaxy. ... we only know of life on Earth, but we’re looking for more everywhere we can. 10 Far-Ranging … WebApr 12, 2024 · That piece of information is very important because, billions of years later, we don’t exactly know how galaxies became how they are today. It’s important to note that …

WebMar 3, 2024 · A galaxy is a vast island of gas, dust and stars in an ocean of space. Typically, galaxies are millions of light-years apart. Galaxies are the building blocks of our universe. Their distribution ... WebSep 23, 2024 · Galaxies are classified by shape. There are three general types: elliptical, spiral, and irregular. Perhaps the most familiar kind of galaxy are spiral galaxies. They have a distinctive shape with spiral arms in a …

WebNov 3, 2024 · Hundreds of billions, if not trillions, of galaxies spin through space, each containing billions or trillions of stars. Some researchers studying models of the universe speculate that the... WebMany galaxies in the universe are gravitationally bound to other galaxies, which means that they will never escape their mutual pull. If those colliding galaxies are of similar size, the resultant galaxy will appear similar to …

WebApr 2, 2024 · Our galaxy probably contains 100 to 400 billion stars, and is about 100,000 light-years across. That sounds huge, and it is, at least until we start comparing it to other galaxies. Our neighboring Andromeda …

WebJan 4, 2024 · The gravity of other galaxies has often affected them, stretching them out or warping them. Collisions or close calls with other galaxies can also deform their shapes. ... Everything we know about ... try glow sightsWebThere is no universal naming convention for galaxies, as they are mostly catalogued before it is established whether the object is or isn't a galaxy. Mostly they are identified by their … philip woodman manchesterWebOct 18, 2024 · The most distant galaxies are caught up in the expansion of the Universe, causing distant galaxies to redshift past the point where our optical and near-infrared … philip woodrowWebDec 1, 2024 · Although several dozen minor galaxies lie closer to our Milky Way, the Andromeda galaxy is the closest large spiral galaxy to ours. Excluding the Large and Small Magellanic Clouds, visible from... philip wood qcWeb1 day ago · Embrace them, and allow those feelings to wash over you, completely. Yes, the anxiety will grow and grow, and you’ll start to feel overwhelmed. That’s part of the process, however: don’t ... philip wood physiotherapy riverstoneWebMar 17, 2024 · Our planetary system is the only one officially called “solar system,” but astronomers have discovered more than 3,200 other stars with planets orbiting them in … philip wood postWebNov 28, 2016 · The answer is no – unless you count seeing the combined light of many billions of stars. From the Northern Hemisphere, the only galaxy outside our Milky Way that’s easily visible to the eye is the... try gmod free demo no download