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Galaxies
Galaxies are large systems of stars and interstellar matter, and they contain billions of stars. Our own galaxy, the Milky Way, has 200 to 400 billion stars, and there are over one billion known galaxies. Questions that have to do with galaxies in general and specific galaxies are perfect for this category!
2,392 Questions
What is the coldest place in the whole Universe?
The coldest place in the entire universe, so far as we know, is laboratories where research into Bose-Einstein condensates are going on. Temperatures of 500 picokelvins have been reached.
Something in radiative equilibrium with the deepest of deep space would reach about 2.7 K, or 2,700,000,000,000 picokelvins, positively toasty by comparison.
What are the characteristics of the galaxies?
Color. The type of star effects the color. Like temperature wise. Spiral galaxies are generally more blue than elliptical galaxies due to its stars. Size is another characteristic along with luminosity.
Are there Earth-like planets outside the Milky Way?
yes there is 20 light years away. it is called Gliese 581g. this planet has land and water and it has the perfect things to create life. This planet is the perfect distance away from its sun for water in liquid form not too hot or cold. There are 7 planets in this solar system but gliese 581g is the only planet identical to ours found by scientists in 2007. This planet had 2 moons and an oxygen atmosphere for life to have evolved. this planet is in our home galaxy the milky way and is the second possible life formed planet besides our own
Earth
can we go there?
N0,because no spacecraft could go there but maybe in the far future
How many background galaxies are behind the UGC 10214 galaxy?
There are several thousand background galaxies behind the PGC 54493 galaxy (with billions of stars, planets, and moons in each one; as well as asteroids and nebulae). Their light has taken 13 billion years to reach Earth.
How far from the center of the galaxy is the sun positioned?
What's a sun? Joking, No the sun isn't in the middle its inside Saturn.
What is the galaxy classification?
The current galaxy classification is based on.
* The Hubble sequence is a morphological classification scheme for galaxies invented by Edwin Hubble in 1936 * The de Vaucouleurs system for classifying galaxies is a widely used extension to the Hubble sequence, first described by Gérard de Vaucouleurs in 1959. * The Yerkes (or Morgan) scheme uses the spectra of stars in the galaxy
Are nebulae larger than galaxies?
Yes. The constellations we see, in fact all star visible from earth make up just a small part of one galaxy. A constellation may have a handful of stars while a Galaxy has billions if not hundreds of billions.
What is the average number of stars in a giant galaxy since it contains trillions of stars?
The average number of stars in a giant galaxy since it contains trillions of stars is 10 trillion.
Superclusters are very large groupings of smaller galactic clusters. Superclusters are the largest known structures in the Universe, and since they are not gravitationally bound, they partake in the Hubble expansion. The Milky Way Galaxy is located in the Local Group, which in turn is located in the Virgo Supercluster.
How do you log off in galaxy S3?
One can log off of Gmail in Galaxy S3 by going to settings and then accounts. Click on Google account and the gmail address and the remove account option.
Alternatively, while on the youtube app, touch the options button (next to the home button at the bottom) and touch sign out at the bottom, then tap sign in and add a different account.
What was the name of the first galaxy ever made?
a telescope
In 1925, Edwin Hubble discover cepheid variable(s) in what we now call the Andromeda Galaxy. From those he could tell that the group of stars was too far away to be part of the Milky Way. It was the first proof that other galaxies exist.
According to wiki:
It is extremely difficult to define the age at which the Milky Way formed, but the age of the oldest star in the Galaxy yet discovered is estimated to be about 13.2 billion years, nearly as old as the Universe itself. This estimate is based on research by a team of astronomers in 2004 using the UV-Visual Echelle Spectrograph of the Very Large Telescope to measure, for the first time, the beryllium content of two stars in globular cluster NGC 6397. From this research, the elapsed time between the rise of the first generation of stars in the entire Galaxy and the first generation of stars in the cluster was deduced to be 200 million to 300 million years. By including the estimated age of the stars in the globular cluster (13.4 ± 0.8 billion years), they estimated the age of the oldest stars in the Milky Way at 13.6 ± 0.8 billion years. Based upon this emerging science, the Galactic thin disk is estimated to have been formed between 6.5 and 10.1 billion years ago.
How do astronomers use pictures of distancee galaxies to determine the age of the universe?
The general tendency is for galaxies that are farther away from us, to move away from us faster. This can give a rough idea of a galaxy's distance, just by observing its redshift (which is a measure of how fast it moves away from us).
What kind of cluster is a tight group of older stars in the halo of spiral galaxies called?
I think you are describing a "globular cluster", which are associated with older stars by most astronomers.
What does the Milky Way galaxy consist of?
There are between 200 and 400 billion stars in the Milky Way, mostly spread out in a spiral disk surrounding a dense central region. Vast clouds of gas and dust called nebulae occupy much of the space between these stars, called the interstellar medium. There may also be debris and planetary objects orbiting the stars or drifting through space. At the center, there is a bar-shaped gathering of stars and gas around 27,000 light years long called the galactic core. Around this is a disk-shaped grouping of stars and matter called the stellar disk, which stretches to about 100,000 light years across and averaging 1,000 light years thick. Our Solar System is located on one of the spiral arms making up this disk. Finally, marking the outer boundary of the galaxy is the galactic halo, which is spherical and contains older stars than the disk. It surrounds the inner galactic components at up to 200,000 light years in diameter. The entire galaxy with all its constituents is thought to orbit around a supermassive black hole found in the very center of the galactic core.
The mass of the entire Milky Way is thought to be about 600 billion times the mass of the sun, and it formed a bit over 13 billion years ago. Our solar system orbits around its center about once every 250 million years. Hypothetical dark matter is suspected of occupying most of the detectable mass in the Milky Way Galaxy. While the observable matter (stars, nebulas, etc.) is as much as 400 billion solar-masses, the total theoretical mass of the dark matter is estimated between 600 billion and 3 trillion solar-masses. The Milky Way is the galaxy we are in, along with some billions of other galaxies. There are a few hundred billion stars in our galaxy, and the Sun is a star with average brightness. There are also star clusters, and nebulas which are big clouds of luminous gas.
group of stars or planets
yes and as a we know that a galaxy is of billions or gazillions so its nearly indefinite u stupid don't your teacher teach you something u and ur teacher both r dumb
