By understanding Venus’s present-day volcanism, scientists can learn more about the divergent fates of Earth and its blistering sister world
“We seem to keep getting teased by these indirect pieces of evidence,” Kane says. But the holy grail—a spewing volcano or a flowing river of molten rock—remained elusive., thereby becoming the best bet at finding active volcanism on Venus. But Herrick remained impatient.
“I think this really is something,” Herrick recalls thinking. He ran it by his co-author, Scott Hensely of NASA’s Jet Propulsion Laboratory, who agreed: something volcanic had stirred. But the most probable scenario is that in 1991, a huge eruption of lava filled the expanding vent, and some of it poured over the rim or bled through a fissure. “We can definitely say it changed shape,” Herrick says. And when a volcano changes shape that dramatically on Earth, the root cause is always molten rock.
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