Introduction
The galaxy of stars, gas and dust called that were held together by gravity. Galaxies have the smallest cross a few hundred light years, including about 100,000 billion years are out. The largest galaxies within 3 million light years and contains more than 1,000 billion are ...
Introduction
The galaxy of stars, gas and dust called that were held together by gravity. Galaxies have the smallest cross a few hundred light years, including about 100,000 billion years are out. The largest galaxies within 3 million light years and contains more than 1,000 billion are out.
Forms based on the way galaxies are classified according to the method of classification of American astronomer Edwin Hubble (1953 – 1986), is formed. There is little definitive information about the evolution of galaxies. Read about the universe billions of years ago to ensure that the mass of gas and dust clouds were generated.
Elliptical galaxies
About 5% of the brightest galaxies are irregular galaxies. It is known that a quarter of the galaxies are irregular galaxies.
I screw galaxies
Spiral galaxies have spiral arms that form a bulge around the central core, a pill that nuclear spins associated with the rotation of the arm. The youngest low-mass stars in spiral galaxies are found in arms and old stars are mostly concentrated in the nucleus. Oldest stars in spherical halos are scattered across the galaxy and have the pills. The arms are also a lot of dust and gas that led to the formation of new stars.
Bar spiral galaxy
The core of the central bulge of a spiral galaxy has a bar and bar shape is drawn. It seems that the nuclear spin of the nucleus as an arm rotates. Some astronomers believe the Milky Way is a spiral galaxy bar. Bar-shaped spiral galaxies and spiral galaxies varies.
Of galaxies with large central bumps with arms not incorporated to the central galaxies with small bumps and open arms. Although spiral galaxies and spiral galaxy’s bar before the two different types were classified, but astronomers now consider them the same.
Elliptical galaxies
Elliptical galaxies form, the form Byzygvn (similar to American football) to form spherical shapes between these two variables are also found. Unlike other galaxies of stars, bright blue light and reflect short-lived, elliptical galaxies appear to be yellow. This is due to stop star formation in these galaxies, which in almost all the light from red giant stars that have a lifespan that is provided.
Active galaxies and unusual
A certain amount of electromagnetic radiation is emitted from the galaxies. Some galaxies, the normal mode, emit large amounts of radiation. These galaxies are called active galaxies.
Most of the energy as X-rays, radio waves and light energy released is so great that the stars can not imagine it to be created.However, because some galaxies like our own galaxy is relatively little energy is released as a central black hole in the crew.
Radio galaxies
All galaxies, radio waves, visible light and produce their own forms of radiation. A very dense galaxies, radio galaxies of radio energy from conventional energy. The energy of two very large, or huge clouds of dust in distant galaxies brighter than Tshtsh find.
These giant clouds of gas eruptions from the galactic center at a rate equal to one-fifth the speed of light, they take shape in the
sky.Of
a million galaxies, only one of them has a radio galaxy.
Colliding galaxies
Most galaxies of our neighboring galaxies have a hundred thousand light years
away.are
connected to each other. May be too close to the galaxies, coupled with their smash and were looking to do a fundamental transformation in the shape they take place
