The day when the sun reaches its greatest height above or below the equator is called

a. a solstice

b. spring

c. fall

d. an equinox

4. who was the first one to measure the speed of light and conclude that it is finite? 5. who was the first philosopher who thought the speed of light is finite? 13. what is the speed of light numerically? 14. give an example of something moving faster than light 15. give an example for some particles or waves that

It is really hard for me right know

The energy released by a nuclear fusion reaction is produced when