Documents The Universe, Solar System, and Planets I Questions: How do we know the Big Bang happened? How do we...

Slide 1 The Universe, Solar System, and Planets I Questions: How do we know the Big Bang happened? How do we know the Universe is expanding? What is the timeframe of Universe…

Documents 186,000 miles a second 300,000,000 meters per second 700 million miles an hour. For scale, the...

Slide 1 Slide 2 186,000 miles a second 300,000,000 meters per second 700 million miles an hour. For scale, the distance from the Earth to the Moon is about 239,000 miles.…