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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?

Infinite space background with silhouette of telescope. This image elements furnished by NASA.

Telescopes: Seeing Stars

Planet Jupiter with its moon Io at left, photographed by the Cassini orbiter during the Cassini-Huygens mission, 2000. spacecraft

7 Important Dates in Jupiter History

Centimetres vs inches, metal rulers on a white background with clipping path.

15 Questions About Units of Measurement Answered

Discover

The Colosseum, Rome, Italy. Giant amphitheatre built in Rome under the Flavian emperors. (ancient architecture; architectural ruins)

New Seven Wonders of the World

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

The Battle of New Orleans, by E. Percy Moran, c. 1910. Andrew Jackson, War of 1812.

26 Decade-Defining Events in U.S. History

World Data Locator Map: Australia

Is Australia an Island?

Abstract vector hi speed internet technology background

History of Technology Timeline

Queen Elizabeth II addresses at opening of Parliament. (Date unknown on photo, but may be 1958, the first time the opening of Parliament was filmed.)

All 119 References in “We Didn’t Start the Fire,” Explained

Town of Sisimiut located on the coast of the Davis Strait on Kangerluarsunnguaq Bay, Greenland

The Largest Islands in the World

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Glenn McKechnie

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