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Caldera chronicles: How astrobiology studies in Yellowstone might teach us about life on other planets

Yellowstone Caldera Chronicles is a weekly column written by scientists and collaborators of the Yellowstone Volcano Observatory. This week s contribution is from Conor Nixon, research space scientist with the NASA Goddard Space Flight Center. In 1989, NASA’s Voyager 2 spacecraft made an incredible discovery — geyser activity on Triton, a moon of Neptune. It was the first time a geyser had been observed away from Earth (not counting the volcanic eruptions discovered on Jupiter’s moon Io by Voyager 1 in 1979). In the decades that followed, geysers were discovered on even more moons in the outer solar system. This two-image mosaic is one of the highest-resolution views acquired by the Cassini spacecraft during its imaging survey of the geyser basin capping the southern hemisphere of Saturn s moon Enceladus.

Caldera chronicles: Small crystals record Yellowstone s volcanic past | Montana Untamed

Yellowstone Caldera Chronicles is a weekly column written by scientists and collaborators of the Yellowstone Volcano Observatory. This week s contribution is from Mark Stelten, research geologist with the U.S. Geological Survey. Yellowstone National Park and its world-famous hydrothermal system are the result a long and dynamic volcanic history that spans millions of years. Yellowstone’s landscape is a reflection of explosive eruptions that produced large basin-shaped depressions referred to as calderas and viscous rhyolite lava flows that produced the broad plateaus. Over the past 50 years scientists have been piecing together the volcanic events that have shaped Yellowstone into the natural wonder it is today. Due to this work, we now have a very good understanding of the major events that occurred at Yellowstone and, importantly, we know when these events occurred. This allows us to not only understand how Yellowstone came to be, but also to help anticipate what may happ

Caldera chronicles: What did Yellowstone look like before the hot spot?

Yellowstone Caldera Chronicles is a weekly column written by scientists and collaborators of the Yellowstone Volcano Observatory. This week s contribution is from Natali Kragh, graduate student in the Department of Earth Sciences at Montana State University. What is the difference between a million and a billion? To put these two numbers in perspective we cycle through one million seconds about every 11.5 days whereas we only cycle through one billion seconds every 31.7 years. So, what does this have to do with Yellowstone geology? Although the modern-day landscape of Yellowstone National Park is covered with volcanic rocks sourced from the hotspot underneath, Yellowstone doesn’t just have rocks from volcanic eruptions.

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