Volcanoes on Venus? Radar images from more than 30 years ago show evidence of volcanic activity, scientists say

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 recently searched that data to study the possible activity of the volcanoes in the terrain. 

The researchers from the University of Alaska and the California Institute of Technology found two large volcanoes in the Atla Regio region of Venus – the highlands of the planet. Ozza and Maat Mons were previously believed to be volcanoes, but the researchers identified their volcanic vents, the hole where they would erupt, and confirmed they are two of the largest volcanoes on the planet, according to the study, published in Science.

"Ozza and Maat Mons are comparable in volume to Earth's largest volcanoes but have lower slopes and thus are more spread out," University of Alaska Fairbanks Geophysical Institute research professor Robert Herrick said in a news release.