A friend tells you "Evolution is just a theory, there is no proof that it actually has taken place" What would you tell your friend?

Photo means light and synthesis means combination so combination of light

The soviet union beat the us to the first successful launch, with the october 4, 1957, orbiting of sputnik 1, and later beat the us to have the first human in earth orbit, yuri gagarin, on april 12, 1961. the "race" peaked with the july 20, 1969, us landing of the first humans on the moon with apollo 11