What is the speed of Milky Way galaxy?

Uses for a system model include all of the following except? When was the space shuttle discovered? Can you give a sentence using the word amazement? What is the northern hamisphere? What terrestrial planets have diameters nearly close in size? What is the meaning of espejo? What does a sextant help pilots and sailors do? Is venus the hottest plannet? How fast does hot air raise in the atmosphere? Why are clouds important for weather? How do you overcome problems met by astronaut in space exploration? Is bust of pallas a noun or adjective? Who invented the headlight? What are three positives of the space program? What day of the week was February 6 1976? What is the atenosphere? What gas important to life was absent from earth's earliest atmosphere? What keeps the sun shining brightly every year instead of burning up and dying? Which is the latest satellite sent by India to the moon? If you weigh 220 lbs on earth how much would you weigh 200 miles above the earth?