Tähegalaktikate

Tähegalaktikate, also known as galaktikad in Estonian, are large systems of stars, gas, dust, and dark matter bound together by gravity. They are the fundamental building blocks of the universe, containing billions to trillions of stars and vast amounts of interstellar material. These systems vary in shape and size, with common types including spiral galaxies (like the Milky Way), elliptical galaxies, and irregular galaxies. Spiral galaxies have a flat, rotating disk with a central bulge, while elliptical galaxies are more spherical and less structured. Galaxies are the primary sites of star formation, where new stars are born from collapsing clouds of gas and dust. They also contain black holes at their centers, which can influence the galaxy's evolution. Tähegalaktikate play a crucial role in the cosmic structure, interacting with other galaxies through gravitational forces and contributing to the overall evolution of the universe.