Photo: NASA/JPL-Caltech/SETI Institute

Jupiter's moon Europa — with its icy shell and subsurface ocean — has long sparked the imaginations of scientists and science fiction writers alike.

What's new: Newly reprocessed images first taken in the 1990s by NASA's Galileo spacecraft show the moon's "chaos terrain" in new relief.

  • The bright white and blue regions are made of water ice, while the reddish color is caused by salts and other minerals, according to NASA.

What's next: Researchers are particularly interested in learning more about Europa because the moon is thought to be one of the best places to hunt for possible life in the solar system.

  • Scientists are hoping to use these newly processed photos to help with planning for NASA's Europa Clipper mission, expected to launch in the 2020s to perform a series of flybys to study the moon from close range.

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5 mins ago - Technology

Facebook Oversight Board begins hearing appeals

Illustration: Aïda Amer/Axios

The Facebook Oversight Board announced Thursday that some Facebook and Instagram users can now submit appeals to the Oversight Board for an independent review of their own content removals.

Why it matters: The board, a first-of-its-kind internet governance body, will begin hearing cases from users ahead of the U.S. election.

Ben Geman, author of Generate
2 hours ago - Energy & Environment

U.S. cities' lagging climate progress

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Reproduced from a Brookings Institution report; Chart: Axios Visuals

A just-published Brookings Institution analysis of U.S. cities' pledges to cut carbon emissions reveals very mixed results.

Why it matters: The potential — and limits — of city and state initiatives have gotten more attention amid President Trump's scuttling of Obama-era national policies.

New state unemployment filings fall to 787,000

Photo: Joe Raedle/Getty Images

First-time applications for unemployment fell last week, according to Department of Labor data released on Thursday.

Between the lines: The overall number of Americans relying on unemployment also fell to a still-staggering 23 million. But there are continued signs of labor market strain, with more people shifting to an unemployment program designed for the long-term jobless.