phys (1119) - Space: space scientists

just a few vague outlines on some space scientists.

there was galileo of course, he used his own made telescope to observe things.

newton actually thought of the idea that chucking an object at the right speed will make it orbit the planet, and chucking it more could let it escape gravity. it turns out that the speed required for this is 11000km/s. newton also suggested that the same principles of gravity on earth, were the principles of celestial gravity as well (which was weird coz people thought they were two different things)

von braun was a german scientist. after WWII, the scientists who made rockets to attack the UK were split and sent to either USA or USSR. von braun was sent to USA. he worked on space program there. von braun designed the original rockets.

oh there was this dude who propose a 3stage rocket, but i forget who. but usually.. rockets were lauched in 3 stages, and that included the recent shuttles, except the shuttles dropped the liquid fuel part so high up that it burnt up on the way back in.

rockets are mostly fuel. fuel to keep going.

oh we talked about satellites.. and how usualy satellites are designed to come, and yet there are some that we sent off out past our solar system (voyager I and voyager II) we still get faint signals from them.. the mars rovers are still going around even though they were meant to die yearsa go.

oh and mr pitt said something weird.. i forget what it is. something like.. to slow a satellite down, you have to speed it up twice. i forget how it works.