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Secret Antarctic ice canyons revealed
Ice shelves in Antarctica are like conveyor belts, continually carrying ice to the sea. Scientists have found hidden canyons on their undersides that may affect the shelves fragility.
October 11, 2017
Red sprite over Oklahoma
Photographer Paul Smith said he thinks this may be the 1st documented capture of a red sprite over Oklahoma. They're large-scale electrical discharges - high above thunderstorm clouds - flickering in the night.
October 11, 2017
Last quarter moon and Gemini stars
Stay up late to see them, or get up before dawn, when the moon, Castor and Pollux will be high in the sky as seen from across the globe.
October 11, 2017
This region on Mars may hold clues to earthly life
Evidence for deep-sea hydrothermal vents in the Eridania basin of southern Mars. Even if Mars never had life, this region may tell us about the type of environment where life on Earth may have begun.
October 10, 2017
Fall colors in New Hampshire
"Fall colors are back," wrote photographer Manish Mamtani.
October 10, 2017
Penetrating the mystery of why we age
Researchers in Germany call the aging process "a quirk of evolution" and take a step forward in understanding why we didn't evolve to live forever.
October 9, 2017
Forecast for Mercury: Morning micro-meteor showers
Mercury - with only the thinnest of atmospheres - has a continuous rain of micro-meteors wherever on the planet dawn is breaking.
October 9, 2017
5 faint Draconid meteors
The naysayers were wrong. Some did catch some Draconid meteors this weekend, in the narrow window between sunset and moonrise.
October 9, 2017
Did the moon once have air?
We know that ancient lunar volcanos spewed lava. Gases rising from the lava might have accumulated around the moon to form a temporary atmosphere, 3 to 4 billion years ago.
October 8, 2017
How gravitational waves attracted a Nobel Prize
The 2017 Nobel prize for physics was awarded to scientists who helped pioneer the discovery of ripples in the fabric of spacetime, known as gravitational waves.
October 8, 2017
