A Magellan radar image of Maat Mons on Venus in 1991. Comparison of further images from the space probe showed it changing, potentially due to volcanic activity. NASA/JPL-Caltech.

(CNN) — When scientists recently took a closer look at archival images of the surface of Venus, they discovered something new: evidence of volcanic activity on Earth’s “twin.” The NASA ...

Scientists say data from more than 30 years ago shows the planet Venus is volcanic. NASA's Magellan spacecraft collected images of the planet's surface between 1990 and 1992, and researchers ...

“Venus is an enigmatic world, and Magellan teased so many possibilities,” said Jennifer Whitten, associate deputy principal investigator of VERITAS at Tulane University in New Orleans.

For decades, Venus, often dubbed “Earth’s twin,” has been depicted as a barren, inhospitable world, its surface locked in an unchanging, oven-hot state. Yet, recent data from NASA’s Magellan orbiter ...

NASA’s Magellan spacecraft visited Venus in the 1990s and captured images. The stunning images reveal that over eight months, a volcanic vent increased in size and changed shape.

Magellan radar image of volcanic "pancake" domes in Tinatin Planitia, Venus. Credit: NASA But the Johns Hopkins study was built on the assumption that lava was cooling atop rigid ground.

NASA's Magellan probe used radar beams to create a photo-quality map of Venus' cloud-shrouded surface in 1991. While the images were taken at a much lower resolution, Herrick worked with NASA's ...