Our Neighborhood - The Milky Way Galaxy
The arrow points to our Star the Sun, is only one of several thousand stars in the Milky Way Galaxy, pictured at the above. Our solar planetary system is located at the tail of the Milky Way Galaxy.! The Star closest to our Sun is 4.5 light years away.! A Light Year is the distance light travels in one year.! Light moves at the speed of 186,272 miles or 300,000 kilometers per second.! Our Sun is 30,000 light years from the center of the Milky Way Galaxy.! The light we see coming from the center of our Milky Way Galaxy, left there 30,000 years ago.! The known Universe we are part of is estimated to contain one million billion other Galaxies.! The Milky Way Galaxy is estimated to contain 10,000 other Solar Systems, similar to ours.
We are living on a planet that is in a constant high-speed motion around itself and traveling on its orbit around the Sun.! The circumference of the Earth at the equator is 25,000 miles, or 40,000 kilometers.! The Earth rotates around its axis once every twenty-four hours time, or one whole day and night.! While Planet Earth is rotating on its axis at over 1000 miles, or 1609 kilometers per hour, Earth is also traveling, revolving on its orbit around the Sun at the amazing speed of 67,000 miles, or 107,200 kilometers per hour, once every 365 days, or one whole year.
Planet Earth’s four seasons is caused by our planet’s axis of rotation tilt at an angle of 23.5 degrees, relative to our orbital plane, the plane of Earth’s orbit around the sun.! Which means it will always be summer at the equator and when at the northern hemisphere we are enjoying summer, people at the southern hemisphere are experiencing winter.!
We are very small Size comparison of Earth to other celestial bodies.