Viktor Ambartsumian

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Viktor Ambartsumian

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Galaxy clusters like Abell 2744 can act as a natural cosmic lens, magnifying light from more distant, background objects through gravity. NASA's James Webb Space Telescope may be able to detect light from the first stars in the universe if they are gravitationally lensed by such clusters. (astronomy, space exploration, galaxies)

How Fast Is the Universe Expanding?

Planet Earth and lunar moon from space

Where Did the Moon Come From?

solar eclipse, sun, moon, astronomy, space

How Do You Tell the Difference Between Total, Annular, Solar, and Lunar Eclipses?

Arrangement of the phases of the moon in total eclipse with Blood Moon

9 Celestial Omens

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

Discover

Horses. Equus caballus. Horse stable. A brown horse looks out from his stall through the window.

Horsing Around: 7 of the Weirdest Racehorse Names in History

January 21, 2019: Superbowl LIII will be played at Atlanta's Mercedes-Benz Stadium on Sunday, February 3, 2019 against the New England Patriots and the Los Angeles Rams.

What Was the Super Bowl’s First Blockbuster Commercial?

Shah Jahan. Taj Mahal. Mughal architecture. Emperor Shah Jahan fifth Mughal Emperor (reigned 1628-1658) India, Himachal Pradesh, Basohli or Jammu and Kashmir, Mankot, circa 1690 Drawings; Opaque watercolor, gold, and ink on paper (see notes)

6 Important Mughal Emperors

Chapter 4 pg 42 - Chapter header of The Adventures of Tom Sawyer by Mark Twain. Published in 1884 by The American Publishing Company

Periods of American Literature

In this aerial photo, structures are damaged and destroyed October 15, 2005 in Balakot, Pakistan. It is estimated that 90% of the city of Balakot was leveled by the earthquake. The death toll in the 7.6 magnitude earthquake that struck northern Pakistan on October 8, 2005 is believed to be 38,000 with at least 1,300 more dead in Indian Kashmir. SEE CONTENT NOTES.

6 of the World’s Deadliest Natural Disasters

Vietnam War. U.S. President Lyndon B. Johnson awards the Distinguished Service Cross to First Lieutenant Marty A. Hammer, during a visit to military personnel, Cam Ranh Bay, South Vietnam, October 26, 1966. President Johnson

Vietnam War Timeline

Attack on Pearl Harbor. December 7, 1941. Pearl Harbor infographic. World War II. Hawaii. United States. Japan. SPOTLIGHT VERSION

Attack on Pearl Harbor Timeline

Viktor Ambartsumian: Facts & Related Content

Written and fact-checked by The Information Architects of Encyclopaedia Britannica

Facts

Also Known As	Viktor Amazaspovich Ambartsumian
Born	September 18, 1908 • Tbilisi • Russian Empire
Died	August 12, 1996 (aged 87) • near Yerevan • Armenia
Awards And Honors	Order of Lenin
Notable Works	“Theoretical Astrophysics”
Subjects Of Study	radio galaxy • stellar association • stellar evolution

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Viktor Ambartsumian

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Henry Norris Russell

American astronomer

William Herschel

William Herschel

British-German astronomer

Arthur Stanley Eddington.

Arthur Eddington

British scientist

Carl Sagan

Carl Sagan

American astronomer

Neil deGrasse Tyson

Neil deGrasse Tyson

American astronomer

Chandrasekhar, Subrahmanyan

Subrahmanyan Chandrasekhar

American astronomer

Pietro Angelo Secchi

Italian astronomer

Vitaly Ginzburg

Russian physicist

Nikolay Aleksandrovich Kozyrev

Russian astronomer

Nikita Khrushchev

Nikita Khrushchev

premier of Soviet Union

Georgy Zhukov

Georgy Zhukov

Soviet marshal

Vasily Ivanovich Alekseyev

Vasily Ivanovich Alekseyev

Soviet weightlifter

Valentina Tereshkova

Valentina Tereshkova

Soviet cosmonaut

Peretz Markish

Russian writer

Yevgeny Grishin

Russian speed skater

Mikhail Tukhachevsky

Soviet military officer

Gherman Stepanovich Titov

Soviet cosmonaut

Yuri Gagarin

Yuri Gagarin

Soviet cosmonaut

Lev Ivanovich Yashin

Soviet athlete

Soviet wrestler Aleksandr Medved

Aleksandr Medved

Russian wrestler

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

Michael Faraday (L) English physicist and chemist (electromagnetism) and John Frederic Daniell (R) British chemist and meteorologist who invented the Daniell cell.

Faces of Science

View of the Andromeda Galaxy (Messier 31, M31).

Astronomy and Space Quiz