May 23, 2024

In a paper published in the journal Icarus, Alex Nguyen, a graduate student at Washington University in St. Louis, used mathematical models and images from the New Horizons spacecraft to take a closer look at the ocean that he says likely covers Pluto beneath a thick layer of nitrogen, methane and water ice. (Image: NASA)

Surprise: an ocean of liquid water on Pluto

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They estimate that Pluto's ocean is, at most, about 8% denser than seawater on Earth, or about the same as the Great Salt Lake in Utah (but much less salty than the Dead Sea.
Astronaut Kate Robbins looks at a geological sample she collected during a simulated moonwalk. Credit: NASA/Josh Valcarcel

Michael Jackson in Arizona caves - NASA is rehearsing for moon walks

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During NASA's Operation Artemis, astronauts will tour the moon. To prepare for this, the space agency is conducting a weeklong field experiment in the lunar-like landscape of the San Francisco Volcanic Field near Flagstaff, Arizona, to
An artist's rendering of a Tidal Disruption Event (TDE), a star torn apart by the powerful gravity of a massive black hole. Credit: Sophia Dagnello, NRAO/AUI/NSF

Cosmic Archaeology: Using Black Holes to Discover Evidence of the Universe's First Stars

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To date there have been no convincing direct detections of Pop III stars - the first stars, because these stars formed in the early universe are very far away and too faint for our ground-based telescopes or
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