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Transcript of Space Exploration
"Let's Light This Candle"
Rockets carry everything needed to burn the fuel, including oxygen.
cannot be shut off or restarted
can be shut off and restarted for steering
They aren't just for TV!
Any object that revolves around another object is a satellite.
The moon is a natural satellite of the Earth.
The Earth is a natural satellite of the sun.
Man-made satellites are used for
weather forecasting, XM radio,
tv, GPS, and dozens of other things.
- instruments sent to other planets to gather information to send back to Earth
Boldly Go Where No Man Has Gone Before!
Galileo went to Jupiter.
Voyager 1 and 2 went to all the planets past Earth
Advantages of using probes
- less costly
- can go where people can't
1st person in space,
Soviet Union in 1961.
1st American in space,
1st American to orbit the Earth, 1962
1st person to walk
on the moon, Apollo 11,
Project Mercury: can a man survive launch and landing
Project Gemini: Can two spacecraft dock and separate
Project Apollo: land on the moon
12 Years later...
Nothing from the Apollo rocket returned to Earth except the astronaut capsule; nothing could be reused. Very expensive.
To save money, NASA builds a reusable space vehicle, the space shuttle.
The space shuttle is only capable
of flying a few hundred miles above Earth.
It cannot go to the moon.
Like previous space stations Skylab and Mir, people live on board for months doing experiments.
The last shuttle flight was in 2011.
Americans have to pay to ride on other countries' spaceships to get to space.
Exploring space has provided
-advances in computers
-communications (GPS, radio, tv, phone)
-new metal alloys
-designs with less drag for planes and swimsuits
-remote traffic light controls for emergency vehicles
It was used mainly to build and supply the International Space Station, ISS.
Will you allow the US space program to disappear?
Alan Sheperd while waiting for launch