Hubble
According to http://en.allexperts.com/q/Astronomy-1360/Observing-Satellite-Naked-eyes.htm, satellites shine because they reflect sunlight (presumably because they are made of shiny, reflective metal). They orbit high above the earth, so for 2-3 hours after sunset and before sunrise, the sun doesn't shine on the part of Earth you are standing on, but it still hits the satellite. This is when you are most likely to see a satellite.
yes apollo 11 is a man made or artificial satellite.
There is no man made satellite that makes crop circles.
An "artificial satellite" Something orbiting something else is by definition a satellite. If the satellite is man-made, it thus gains the characteristic of being artificial.
The moon is a satellite because it moves around Earth. Earth and the moon are called “natural” satellites. But usually when someone says “satellite,” they are talking about a “man-made” satellite. Man-made satellites are machines made by people
That's a really hard one to answer. If you are talking about historical or "famous" figures in astronomy, it would depend on the list provided. If you are talking about who made the latest contribution in general, well there are tons of papers constantly being published, so it will change frequently.
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Ya mom
Late 8th century and 9th century BC.
fresh troops who outnumbered the enemy
Since human beings first looked into the skies, during the daytime and particularly at night, there has been astronomy. Many major figures from ancient times through to the present day have made contributions to astronomy.
Many scientists have made major contributions to society. Mendeleev - who created the first periodic table of elemets
Ruth made a major contribution, pitching a 14-inning complete-game victory in Game Two.
serving as soldiers
IN COMMUNICATIONS: Satellite uses satellite (orbiting) relay-stations in Space but Terrestrial uses cable or antenna-to-antenna signals based entirely on Earth to broadcast your television, radio or cell-phone :) ++++ IN ASTRONOMY: Terrestrial means Earth- (or planet-) bound; a Satellite is any natural or man-made object that orbits a planet. The Moon is a satellite of the Earth.
yes
serving as soldiers