my galaxy is milky way
Milky Way is the galaxy that contains our solar system. Its name "milky" is derived from its appearance as a dim glowing band arching across the night sky whose individual stars cannot be distinguished by the naked eye.The milky way is 13.21 billion years. The age of the Milky Way is determined by measuring the amount of beryllium preson of the oldest known stars in the Milky Way. Fun Facts: 1. The Milky Way began as a series of dense regions in the early universe not long after the Big Bang. The firsts stars to form were in globular clusters that still exist . They are among the oldest stars formed in the Milky Way region. 2. The Milky Way has grown by merging with other galaxies through time. It is currently acquiring stars form a very small galaxy called the Sagittarius Dwarf Spheroidal, as well as gobbling up material form the Magellanie Clouds. 3. The Milky Way moves through space at a velocity of about 552 kilometers per second ( 343 miles per second) with respect to the Cosmie Microwave Background radiation. 4. The Milky Way central core contains a supermassive black hole. It is commonly referred to as Sagittarius A*. It contains the mass of about 2.6 million Suns. 5. The stars, gas and dust of the Milky Way all orbit the center at a rate of about 220 kilometers per second. This constant rate for all stars at different distances from the core implies the existence of a shell of dark matter surrounding our galaxy. 6. Our galaxy will collide with Andromeda Galaxy in about 5 billion years. Some astronomers refer to our two galaxy as a binary system of giant spirals.
10 Incredible Facts about the Galaxy