Category Archives: Sidereal Times

X-Ray Telescopes

Posted on December 2, 2024 by ST Editors

by S. Prasad Ganti All the X-ray telescopes are in space. None on the ground. There are optical, infra-red, radio telescopes on the ground, but not X-rays. For the simple reason that X-rays coming from outer space cannot penetrate the … Continue reading →

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

A Message from Princeton University Press

Posted on December 2, 2024 by ST Editors

Stay starstruck this November with Princeton’s spell-binding collection of books on astronomy, including the brand-new Hidden in the Heavens, a NASA insider’s account of the Kepler mission and its bewildering discoveries. Take some time to learn from women who broke down barriers and … Continue reading →

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Snippets

Posted on December 2, 2024 by ST Editors

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 →

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From The Director

Posted on November 2, 2024 by ST Editors

by Rex Parker, PhD director@princetonastronomers.org Meeting Nov 12 at Peyton Hall.  We hope to see you in person at Peyton Hall on campus for the next monthly meeting on November 12 (7:30pm).  Our speaker will be Princeton University post-doc Manuel … Continue reading →

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From The Program Chair

Posted on November 2, 2024 by ST Editors

by Victor Davis, Program Chair November Meeting The November, 2024 meeting of the AAAP will take place in Peyton Hall on the campus of Princeton University on Tuesday, November 12th at 7:30 PM. As usual, the meeting is open to … Continue reading →

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Minutes of the October 8, 2024 Meeting

Posted on November 2, 2024 by ST Editors

by Gene Allen, Secretary Director Rex Parker opened the meeting in Peyton Hall and on Zoom at 1934. There were 35 in attendance and 43 were noted online. Rex reported that the 2024 Nobel Prize in Physics has been awarded … Continue reading →

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Documentary Screening at IAS

Posted on November 2, 2024 by ST Editors

by Lee Sandberg I have an event that will likely be of interest to the membership. On Nov. 15 at 5:00pm, the Institute for Advanced Study will host a public screening of the documentary film “The Hunt for Planet B“. … Continue reading →

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Time

Posted on November 2, 2024 by ST Editors

by John Church Time, in and of itself, flows equably without relation to any external thing.– Isaac Newton My granddaughter Nora once asked her mother where time comes from. Hmm! No one has ever been able to really answer this … Continue reading →

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Hubble Tension

Posted on November 2, 2024 by ST Editors

by S. Prasad Ganti Edwin Hubble was the legendary astronomer of the early twentieth century. Credited with the discoveries of the Andromeda galaxy and the expansion of the universe. With these, he brought the concept of galaxies to our lexicon. … Continue reading →

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