Christina Koch (with red stripes) was making her fourth career Extravehicular Activity (EVA), whilst Jessica Meir became the 14th U.S. woman and the 15th woman in history—when one also counts Russia’s Svetlana Savitskaya—to perform a spacewalk. Photo Credit: NASA Thirty-five years to the month since Kathy Sullivan carved her name in the annals of history by becoming America’s first female ...

The Number of the Heavens: A History of the Multiverse and the Quest to Understand the Cosmos by Tom Siegfried Harvard Univ. Press, 2019 hardcover, 352 pp., illus. ISBN 978-0-674-97588-0 US$29.95 The idea of parallel universes has been a staple of science fiction for decades, and perhaps wishful thinking as well: many pine for an alternate universe where the outcome ...

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Jim Bridenstine and Elon Musk appeared to see eye-to-eye on the importance of commercial crew

NASA’s InSight lander set its heat probe, called the Heat and Physical Properties Package (HP3) or “the mole,” on the Martian surface on Feb. 12, 2019. Photo Credit: NASA/JPL-Caltech/DLR NASA’s InSight mission on Mars has been incredibly successful so far, with new findings about magnetism in the crust, marsquakes and even possible evidence for a vast amount of subsurface water. ...

The volcano Maat Mons, as viewed by Magellan’s powerful Synthetic Aperture Radar (SAR). The ambitious mission to radar-map Venus came to an end 25 years ago, this month. Image Credit: NASA Twenty-five years ago, this month, a tiny spacecraft ended a remarkable mission which successfully mapped over 90 percent of the surface of Venus and, in so doing, unmasked its ...

Ad Astra Directed by James Gray 123 minutes Rated PG-13 Over the last couple weeks, at space industry events and other encounters, I’ve had several conversations along these lines: “Hey, Jeff, have you seen Ad Astra?” “No, not yet.” “Don’t! It’s terrible.” Over time, those comments seem less like helpful advice and more like a dare. How bad could this ...

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Boeing introduced last month the 702X, a new commercial satellite bus intended to serve the growing