Tag Archives: kaplan

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compiled by Arlene & David Kaplan Pluto May Have Captured Its Biggest Moon After an Ancient Dance and Kiss Some 4.5 billion years ago, the dwarf planet Pluto was suddenly joined by a companion. For a very brief period — perhaps only … Continue reading

Posted in February 2025, Sidereal Times | Tagged , | Leave a comment

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compiled by Arlene & David Kaplan Interstellar “tunnel” found that connects our solar system to other stars Space can surprise even those who spend their lives studying it. People often think of our solar system as just a few planets … Continue reading

Posted in January 2025, October 2024, Sidereal Times | Tagged , | Leave a comment

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compiled by Arlene & David Kaplan Vast Oceans of Water May Be Hiding Within Uranus and Neptune We might finally understand what’s going on inside Uranus and Neptune, and the answer is pretty surprising: They may each contain an ocean … Continue reading

Posted in December 2024, October 2024, Sidereal Times | Tagged , | Leave a comment

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compiled by Arlene & David Kaplan Ion engines could take us to the solar gravitational lens in less than 13 years, suggests paper Sending an object to another star is still the stuff of science fiction. But some concrete missions … Continue reading

Posted in November 2024, Sidereal Times | Tagged , | Leave a comment

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compiled by Arlene & David Kaplan The Sun Will Destroy the Earth One Day, Right? Maybe Not. In six billion years the sun will expand into a red giant. That process should consume Mercury, and maybe Venus. For a long … Continue reading

Posted in October 2024, Sidereal Times | Tagged , | Leave a comment

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compiled by Arlene & David Kaplan Mining for Neutrinos, and for Cosmic Answers Every morning, two dozen miners and engineers pack into a cage-like elevator for an 11-minute descent into the bowels of South Dakota’s Black Hills. At the bottom, … Continue reading

Posted in September 2024, Sidereal Times | Tagged , | Leave a comment

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compiled by Arlene & David Kaplan Moon craters with NASA’s Shadowcam When a NASA spacecraft passes over Shackleton Crater on the moon and peers in, it sees this: a sea of blackness and nothing more. This 13-mile-wide crater lies close … Continue reading

Posted in Mid-summer 2024, Sidereal Times | Tagged , | Leave a comment

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compiled by Arlene & David Kaplan Solar Storm Crashes GPS Systems Used by Some Farmers, Stalling Planting The powerful geomagnetic storm that cast the northern lights’ vivid colors across the Northern Hemisphere over the weekend also caused some navigational systems in tractors and … Continue reading

Posted in June 2024, Sidereal Times | Tagged , | Leave a comment

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compiled by Arlene & David Kaplan Glamping With the Stars As I exited Harry Reid International Airport on a bright March afternoon, my hand flew up to protect my eyes, which had grown accustomed to the dull light of a … Continue reading

Posted in May 2024, Sidereal Times | Tagged , | Leave a comment

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compiled by Arlene & David Kaplan Eclipses Injured Their Eyes, and the World Never Looked the Same A young woman visited New York Eye & Ear Infirmary of Mount Sinai Hospital shortly after the eclipse of Aug. 21, 2017. She told … Continue reading

Posted in April 2024, Sidereal Times | Tagged , | Leave a comment