galaxy containing the solar system, billions of stars and other planets.
It can be seen as a broad band of faint light in the night sky.
Formed approximately 14 billion years ago
a spiral galaxy with large concentration of stars
in its nucleus
Stars, dust, and gas fan out from the thick center
of the Galaxy in long spiraling arms
approximately 100,000 light years in diameter
Our solar system is located on one of these spiral
arms, about 26,000 light years from the center of the Galaxy
All objects in the Galaxy revolve around the
It takes 250 million years for our Sun to pull us
through one revolution around the center of the Milky Way
Through a telescope the Milky Way galaxy has been
found to be made up of countless individual stars that seem relatively close
together. This is because from the vantage point of Earth we are looking at the
Milky Way on its edge and can't see where the stars are actually located.
The Milky Way is part of a galaxy cluster that
includes 30 other galaxies, the closest of which is the Andromeda Nebula.
Scientists have calculated that are about 400
billion stars in our galaxy