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Space Shuttle program
NASA's Space Shuttle, officially called Space Transportation System (STS), is the United States government's only manned launch vehicle currently in service. It is the first winged manned spacecraft ... > more -
Carl Sagan
Dr Carl Edward Sagan (November 9, 1934 - December 20, 1996) was an American astronomer, astrobiologist and highly successful science popularizer. He pioneered exobiology and promoted the Search for ... > more -
Neptune's natural satellites
Neptune has 13 known moons. The largest by far is Triton, discovered by William Lassell just 17 days after the discovery of Neptune itself. It took a hundred years to discover the second, Nereid. ... > more -
Solid-fuel rocket
A solid rocket or a solid fuel rocket is a rocket with a motor that uses solid propellants (fuel/oxidizer). The earliest rockets were solid fuelled, powered by gunpowder, used by the Chinese in ... > more -
Satellite television
Satellite television is television delivered by way of communications satellites, as compared to conventional terrestrial television and cable ... > more -
European Space Agency
The European Space Agency (ESA), established in 1975, is an inter-governmental organisation dedicated to exploration of space with currently 17 member states. ESA has ambitious space plans that may ... > more -
Asteroid belt
The asteroid belt is a region of the solar system falling roughly between the planets Mars and Jupiter where the greatest concentration of asteroid orbits can be found. Despite popular imagery, the ... > more
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