Using lava flows on Earth as a basis for comparison, the team calculated that the Venusian volcanoes added new rock between 10 and 66 feet (3 to 20 meters) thick. The eruption at Sif Mons ...

If this is really an impact structure, it would be Venus' oldest and largest, giving us a rare glimpse into Venus' past and informing early planet processes.' ...

The volcanic vent is part of the larger Maat Mons volcano system ... and Spectroscopy)—the first mission to study the Venusian surface since Magellan—will orbit the planet and peer through ...