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NASA Gets the Picture About Water on Mars

The two rovers on Mars continue their pursuit of evidence that water once flowed on the Red Planet.

Earlier this week, scientists said the rocks and soil at Opportunity's landing site did show signs of having been shaped by flowing water. Numerous images from Mars, promptly available to the general public, are proving to be a popular draw for Web users.

NPR's John Ydstie discusses the findings -- and some of the photos -- with NPR's Joe Palca. Follow along with the Web links at the bottom of the page.

Copyright 2022 NPR. To see more, visit https://www.npr.org.

Joe Palca is a science correspondent for NPR. Since joining NPR in 1992, Palca has covered a range of science topics — everything from biomedical research to astronomy. He is currently focused on the eponymous series, "Joe's Big Idea." Stories in the series explore the minds and motivations of scientists and inventors. Palca is also the founder of NPR Scicommers – A science communication collective.
John Ydstie has covered the economy, Wall Street, and the Federal Reserve at NPR for nearly three decades. Over the years, NPR has also employed Ydstie's reporting skills to cover major stories like the aftermath of Sept. 11, Hurricane Katrina, the Jack Abramoff lobbying scandal, and the implementation of the Affordable Care Act. He was a lead reporter in NPR's coverage of the global financial crisis and the Great Recession, as well as the network's coverage of President Trump's economic policies. Ydstie has also been a guest host on the NPR news programs Morning Edition, All Things Considered, and Weekend Edition. Ydstie stepped back from full-time reporting in late 2018, but plans to continue to contribute to NPR through part-time assignments and work on special projects.