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Space Probes and Satellites
Transcript of Space Probes and Satellites
What is a space probe?
A space probe is any
craft which is sent into space to do
. There are 3 basic types:
Sputnik 1 was the first probe to go into space.
It was launched on Oct. 4, 1957, by the former Soviet Union. It was about the size of a beach ball. It sent signals back to Earth for about
and orbited for
until it fell back to Earth and burned at re-entry.
Fortunately, space probes have really advanced over the years.
One of the most famous probes is
. It has traveled further in space than any human-made object. It launched into space in
. Voyager 1 flew past
and then headed for the edge of our solar system. It has traveled over
11 billion miles
. It will leave our solar system this year.
Curiosity (arrived August 2012, still active)
Opportunity (arrived January 2004, still active)
Spirit (arrived January 2004, last transmission March 2010)
Mars Pathfinder (arrived July 1997, last transmission Sept 1997)