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What galaxies are smaller with many bright young stars and lots of gas and dust for star formation?
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∙ 12y ago
Spiral Galaxies
Wiki User
∙ 12y ago
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How can dwarfs be so bright when they are smaller than the sun?
Dwarfs are bright because they are galaxies which have their own stars. They are not closer to the earth than the sun.
Do Galaxies contain millions of stars?
Smaller galaxies do. Larger galaxies contain billions or even trillions of stars.
Why do some stars appear smaller than others?
some stars seem smaller than the other because they are further away from earth. many stars are also located in different galaxies and are very bright therefore making it slightly visible.
Galaxies that have a bright center that contains very little dust and gas?
Stars come in a variety of types. Blue stars, which are very hot, tend to have shorter lifetimes than red stars, which are cooler. Regions of galaxies where stars are currently forming are therefore bluer than regions where there has been no recent star formation. Spiral galaxies seem to have a lot of gas and dust, while elliptical galaxies have very little gas or dust.
What is an orphan star?
Not all stars belong to galaxies. Galaxies collide, and this process strips stars from their parent galaxy and hurls them into intergalactic space. The Hubble Space Telescope has detected a few hundred very bright, orphan, stars between the galaxies in the Virgo Cluster. Although stars most certainly form inside some collection of matter such as a galaxy, their history after formation can include being ejected from a galaxy and becoming an orphan star.
What are similarities between elliptical and spiral galaxies?
While spiral galaxies are bright, elliptical galaxies are dim. Spiral galaxies are hotbeds of star formation, but elliptical galaxies aren't nearly as prolific because they contain less gas and dust, which means fewer new (and brighter) stars are born
Why are spiral galaxies so bright?
The brightness of normal galaxies is mainly due to stars; quasars are believed to get most of their energy output from the black hole at their center.
What are the bright lights in night sky that are NOT stars or planets?
The moving bright lights may be aircraft, satellites, or meteors. The bright points that are not stars or planets may also be galaxies, asteroids, comets, or the moons of planets.
Why dwarf stars are so bright?
Dwarf stars are NOT "so much Bright", the smaller the star is (provided it is on the main sequence) the less intrinsically bright it is.
Why are dwarf stars so much Bright?
Dwarf stars are NOT "so much Bright", the smaller the star is (provided it is on the main sequence) the less intrinsically bright it is.
Do galaxies have nebulae?
Many do, certainly. However, the very oldest galaxies have used up most of their starforming material by now. Spiral galaxies such as our own have lots and lots of nebulae. Often galactic rotation can start off bouts of star formation from the nebulae (both bright and dark) as they come under the gravitational influence of new stars in their neighbourhood.
How many stars in the average galaxy?
Galaxies vary a lot in size, from dwarf galaxies that have a few hundred million stars, to huge galaxies with a hundred trillion stars. (That's a ratio of about 1 to a million.)Our own galaxy has somewhere between 200 and 400 billion stars. Actually, most galaxies are quite a bit smaller than our own galaxy, since dwarf galaxies occur in larger numbers.
