* Day and Night are caused by the
Revolution of the Earth
Tilt of the Earth on its axis
rotation of the Earth
gravitational pull of the Moon

Is those questions??!

I think it’s rotation of the earth but I could be wrong

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