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Earth satellite
Introduction References & Edit History Quick Facts & Related Topics
Images & Videos
U.S. Explorer 10 satellite Sputnik 1 International Space Station; Discovery
Two satellites in space above the Earth.
An astronaut in space waves while surrounded by floating plastic debris including bottles, a bag, a straw, and a plate near Earth's orbit.
TIROS weather satellite The satellite's solar panels are arrays of solar cells that provide the electrical energy needed for its functions, the power being stored in batteries. Its antennas may be 8 ft (2.5 m) in diameter and may transmit wide-area-of-coverage beams or narrowly focused “spot” beams.
Protecting satellites from space debris
Know how GPS satellites guide airplanes, cars, and even cell phones
Learn how solar flares can affect satellites, rockets, telecommunications systems and activity on the surface of the Earth
Quizzes
Nicolaus Copernicus. Nicolas Copernicus (1473-1543) Polish astronomer. In 1543 he published, forward proof of a Heliocentric (sun centered) universe. Coloured stipple engraving published London 1802. De revolutionibus orbium coelestium libri vi.
All About Astronomy
Buzz Aldrin. Apollo 11. Apollo 11 astronaut Edwin Aldrin, photographed July 20, 1969, during the first manned mission to the Moon's surface. Reflected in Aldrin's faceplate is the Lunar Module and astronaut Neil Armstrong, who took the picture.
Exploration and Discovery
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Videos

What are different types of satellites?
When it comes to artificial satellites, we may have an overcrowding problem.
Video: Contunico © ZDF Studios GmbH, Mainz
Should We Be Worried About Space Trash?
Space is the world's largest garbage dump.
Video: Encyclopædia Britannica, Inc.
Protecting satellites from space debris
Learn about space debris, including efforts to eliminate the danger it poses to satellites,...
Video: Contunico © ZDF Studios GmbH, Mainz; Thumbnail © dottedhippo-iStock/Getty Images
Know how GPS satellites guide airplanes, cars, and even cell phones
Learn how GPS satellites are affected by relativity.
Video: © MinutePhysics (A Britannica Publishing Partner)
Learn how solar flares can affect satellites, rockets, telecommunications systems and activity on the surface of the Earth
An overview of solar flares.
Video: University College Cork, Ireland (A Britannica Publishing Partner)

Images

U.S. Explorer 10 satellite
U.S. Explorer 10 satellite shown undergoing testing in a National Aeronautics and...
NASA
Sputnik 1
NSSDC
International Space Station; Discovery
The International Space Station, photographed by an STS-114 crew member aboard the...
NASA
TIROS weather satellite
U.S. TIROS weather satellite orbiting Earth.
NASA
The satellite's solar panels are arrays of solar cells that provide the electrical...
© Merriam-Webster Inc.
Costa Rica
Basílica de Nuestra Señora de los Ángeles en Cartago, Costa Rica.
© manx_in_the_world—iStock/Getty Images
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