Galaxies Observable facts
While investigating facts about Galaxies Observable From Earth and Distance To The Farthest Galaxies Observable, I found out little known, but curios details like:
The Milky Way Galaxy is located in the largest empty void in the observable universe.
how many galaxies are there in the observable universe?
There is a supermassive void in space called the Boötes void and if the Milky Way had been in the center of the void, we wouldn't have known there were other galaxies until the 1960s. The void is 0.27% the width of the entire observable universe.
In my opinion, it is useful to put together a list of the most interesting details from trusted sources that I've come across. Here are 42 of the best facts about How Many Galaxies Observable Universe and How Many Galaxies Are There In The Observable Universe I managed to collect.
what is the estimated number of galaxies in our observable universe?
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Our galaxy plus a few more are trapped in this thing called the local group that only makes up 0.00000000001 percent of the observable universe and because of the nature of the expanding universe, we'll never be able to leave the local group. Even with light speed travel.
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There are over 2 trillion galaxies in the observable universe and that up until 1924, the common knowledge was that the milky way was itself the whole universe
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The Milky Way galaxy may reside in the largest void in observable space.
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All things observable--the stars, planets and galaxies that can be seen today--make up just 4% of the universe. The other 96% is made of stuff astronomers can't see, detect or even comprehend.
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The largest galaxy in the observable universe is elliptical galaxy, IC 1101. It has 100 trillion stars and is 6 million light years across! By comparison, the Milky way has a mere 100 billion stars and is 120,000 light years across.
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In 2004, a Magnetar (a type of a Neutron Star with a powerful magnetic field) had a large gamma ray burst which briefly expanded the ionosphere. It is thought to be the largest explosion observed in the galaxy by humans since the supernova observed by Johannes Kepler in 1604.
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Our galaxy is part the Local Group, spanning roughly 10 million light years in diameter, making up 100 billionth of a percent of the observable universe. Humanity can never venture beyond this, because of the universe's rapid expansion. Eventually, other groups may be entirely undetectable.
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Scientists estimate there are between one and two TRILLION galaxies in the observable universe
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The size of the entire universe could actually be smaller than the size of the observable universe, with many seemingly different galaxies in the observable universe actually being the same galaxy at different points in time
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About 77% of the galaxies that have been observed by man are spiral galaxies.
Why are galapagos tortoises so big?
You can easily fact check why do galapagos tortoises have different shells by examining the linked well-known sources.
During a clear dark sky, the Sombrero Galaxy can be spotted through binoculars, and using a large telescope, the dust lane can be observed.
In 1885 a supernova was observed in Andromeda Galaxy, and is called S Andromedae. Without the telescope this supernova would not have been seen from earth.
Despite the universe being 13.8 billion years old, the observable universe has a total diameter of 92 billion light years. The edge of the observable universe is 46 billion light years away. It contains an estimated 100 billion galaxies. - source
The Pinwheel Galaxy's spiral arms has more than 3,000 starbirth regions, and has the most of any similar type galaxy so far observed.
There is a central supermassive black hole located in the heart of the Sombrero. Observations of this area point to a mass of a billion Suns, and may be the most massive of any black hole found at the heart of a galaxy.
When will the milky way and andromeda galaxies collide?
There are two massive bubbles on either side of the galactic plane of our Milky Way galaxy at the center which can only be observed in x-rays and gamma Ray's. They were first discovered in 2010 by NASA's Fermi Gamma-ray Space Telescope.
How many galaxies in the observable universe?
Through a very large telescope, scientists have observed the supergiant elliptical galaxy grow larger than ever before. Scientists have confirmed that M87 is expanding and growing as it absorbs concentrations of interstellar matter and devouring smaller galaxies.
Near M87 is a collection of galaxies arrayed in a pair of chain-like structures called Markarian's Chain. These structures are visible to amateur observers with good-sized telescopes.
Though it can be seen sometimes with the naked eye, it can be better observed using binoculars or a telescope. However, even a small amount of light pollution can affect the observation of the galaxy without the aid of a telescope.
Satellites used for observing distant planets and galaxies are called astronomical satellites.
Because of the similarities, observations of the Andromeda are how astronomers make assumptions about the Milky Way.
