Johann Palisa

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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?

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

Karlsplatz Stadtbahn Station, designed by Otto Wagner, operated from 1899 unti l981 when the rail line was converted to a subway. The two identical buildings were repurposed as an art gallery and a cafe with stairs to the newer underground station.

12 Revolutionary Buildings to Visit in Vienna

Discover

African Americans demonstrating for voting rights in front of the White House as police and others watch, March 12, 1965. One sign reads, "We demand the right to vote everywhere." Voting Rights Act, civil rights.

Timeline of the American Civil Rights Movement

Ruminant. Deer. Red deer. Cervus elaphus. Buck. Stag. Antlers.

9 of the World’s Deadliest Mammals

9 Mind-Altering Plants

Space race (1957-1969) infographic between United States (U.S.) and Russia. America, Soviet Union, U.S.S.R., space exploration

Timeline of the Space Race, 1957–69

Venus, view of the northern hemisphere based on observations made by the Magellan spacecraft. The Maxwell Montes, Venus' highest mountain range, is the bright spot just below the center of the image. The Montes, and the dark areas above and to its left,a

5 Weird Facts About Venus

Young boys working in a thread spinning mill in Macon, Georgia, 1909. Boys are so small they have to climb onto the spinning frame to reach and fix broken threads and put back empty bobbins. Child labor. Industrial revolution

The Rise of the Machines: Pros and Cons of the Industrial Revolution

Why Doesn’t Arizona Observe Daylight Saving Time?

Johann Palisa: Facts & Related Content

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

Facts

Born	December 6, 1848 • Opava • Silesia
Died	May 2, 1925 (aged 76) • Vienna • Austria
Subjects Of Study	asteroid

Hipparchus

Greek astronomer

William Herschel

British-German astronomer

Carl Friedrich Gauss

German mathematician

Ptolemy

Egyptian astronomer, mathematician, and geographer

Edmond Halley

British scientist

Sir John Herschel, 1st Baronet

English astronomer

Franz Xaver von Zach

German-Hungarian astronomer

Annie Jump Cannon

American astronomer

Benjamin Apthorp Gould

American astronomer

John Flamsteed

British astronomer

Otto Heckmann

German astronomer

Peter Naur

Danish astronomer and computer scientist

Giovanni Virginio Schiaparelli

Italian astronomer

Frank Schlesinger

American astronomer

Max Wolf

German astronomer

Jacobus Cornelius Kapteyn

Dutch astronomer

Johannes Hevelius

Polish astronomer

Friedrich Wilhelm August Argelander

Prussian astronomer

Johan Ludvig Emil Dreyer

Danish astronomer

William Wallace Campbell

American astronomer

Quiz

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

Astronomy and Space Quiz

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

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

Johann Palisa: Facts & Related Content

Facts

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