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dark energy
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three Type Ia supernovas Wilkinson Microwave Anisotropy Probe matter-energy content of the universe
Understand the theoretical model of dark energy and the acceleration of the universe
For Students
dark energy summary
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.
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Planet Earth and lunar moon from space
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solar eclipse, sun, moon, astronomy, space
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9 Celestial Omens
Spiral Galaxy type Sa-Sb or Sa/Sb in the constellation Virgo. The majestic Sombrero Galaxy Messier 104 (M104) or NGC 4594. The team took six pictures of the galaxy, stitched them together to create the final composite image. Photo from May-June 2003
9 Britannica Articles That Explain the Meaning of Life
1 July 2002: The Solar and Heliospheric Observatory (SOHO) satellite reveals a massive solar eruption more than 30 times the Earth's diameter. The eruption formed when a loop of a magnetic field over the surface of the Sun trapped hot gas.
6 Questions About the Sun Answered
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Close up of praying mantis walking on stone ground against a blurred background in Japan
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Battle of Puebla. Cinco de Mayo. General Porfirio Diaz leads Mexican cavalry to victory against the French lead by General Charles Lorencez at Puebla, Mexico April 2, 1867. Oil on canvas, 1902. May 5, 1862. General Ignacio Zaragoza
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Small, white rat (genus Rattus) on a glass table. (rodent, laboratory, experiment)
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Ice Sledge Hockey, Hockey Canada Cup, USA (left) vs Canada, 2009. UBC Thunderbird Arena, Vancouver, BC, competition site for Olympic ice hockey and Paralympic ice sledge hockey. Vancouver 2010 Olympic and Paralympic Winter Games, Vancouver Olympics
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Photos and Videos

three Type Ia supernovas
Wilkinson Microwave Anisotropy Probe
matter-energy content of the universe
Understand the theoretical model of dark energy and the acceleration of the universe
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Key People

Adam Riess
Adam Riess
American astronomer
Brian P. Schmidt.
Brian P. Schmidt
American-born Australian astronomer
Saul Perlmutter
Saul Perlmutter
American physicist

Related Quizzes and Features

Quiz
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