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Editors of EarthSky

Will paper computers revolutionize smartphones and tablets?

Users interact with the paper computer by bending it into a cell phone, flipping the corner to turn pages, or writing on it with a pen.

Space-time vortex around Earth confirmed

NASA's Gravity Probe B has confirmed an Einstein theory of a four-dimensional space-time vortex around Earth, which twists as Earth spins.

Tribute on Mars to Alan Shepard and the flight of Freedom 7

The Freedom 7 crater on Mars is 82 feet in diameter, matching the height of the Redstone rocket piloted by Alan Shepard.

Will sea-level begin rising more rapidly along U.S. west coast?

After a three-decade hiatus, sea-level rise might return to U.S. west coast, say Scripps Oceanography researchers.

14,000 quasars shine a light on the distant universe

Quasars illuminate ghostly clouds of intergalactic hydrogen, providing view of universe 11 billion years ago.

Voyagers push toward interstellar space, carrying a record of love

Voyagers carries a golden record with greetings from Earth in 55 languages, music, and an EEG showing the brain waves of a woman in love.

Green flash from moon captured by photographer

ESO astrophotographer captures elusive green flash as moon sets over Chile's Atacama Desert.

Andromeda Galaxy video in many colors

Rainbow colors from Andromeda Galaxy, our neighboring galaxy - some invisible to the eye, but visible to ESA telescopes - reveal the life cycle of stars.

Exploding star helps reveal secret of supernova origins

A study of x-rays emanating from the remnant of a 1572 supernova provides strong evidence that a companion triggered the exploding star.

Gallup survey: In U.S., 53% worry about having enough money in retirement

Gallup survey shows those closest to retirement worry less about having enough than workers in 30-49 age group. Most project retirement age at 66.