The Milky Way galaxy is estimated to contain 100 billion to 200 billion planets, based on observations from telescopes like Kepler and Gaia. This number is rough, as it depends on the number of stars (approximately 100-400 billion) and the likelihood of planets orbiting them, with many stars hosting multiple planets. The exact count is uncertain due to limitations in detecting smaller or distant planets.
The Sun takes about 225-250 million years to complete one full orbit around the Milky Way's galactic center, a period often called a galactic year. This rotation occurs at a speed of roughly 828,000 km/h (514,000 mph), with the Sun located about 27,000 light-years from the galactic center. The time varies slightly due to the galaxy's complex structure and dynamics.
