# WONDER #1220: How Fast Is the Speed of Light?

Question **1** of **3**

## Who was the first scientist to show that light moved at a finite speed rather than instantaneously?

- Albert Einstein
- Carl Sagan
- Ole RĂ¸mer
- Isaac Newton

Question **2** of **3**

## Light travels at about how many miles per hour?

- 671 million
- 186,000
- 299,792,458
- 55

Question **3** of **3**

## The speed of light is an important mathematical constant that forms the basis of what astronomical unit of time and distance?

- meter
- miles per hour
- foot
- light-year

Check your answers online at https://www.wonderopolis.org/wonder/how-fast-is-the-speed-of-light.