Category Archives: Sidereal Times

The Night Sky: Key to Experiencing and Preserving Earth’s Beauty

Posted on September 30, 2024 by ST Editors

By Razvan Dominic Ionescu Wanting to see the Milky Way again, and to reconnect with a childhood memory, in August 2019 I took my family on a trip to one of the darkest spots on the East Coast of the … Continue reading →

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

Waves in the Cosmic Sea

Posted on September 30, 2024 by ST Editors

by S. Prasad Ganti BAO (Baryon Acoustic Oscillation) is a mouthful of an acronym. It interested me because of its relation to our baby Universe. That was a time when our Universe was less than 380,000 years old. With no … Continue reading →

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

Harvest Moon Eclipsed!

Posted on September 29, 2024 by ST Editors

by Lisa Fanning Lunar eclipse photo from 9/17/24 Harvest Moon  Left: 9:31 PM ET partial penumbra eclipsed moonRight: 10:44 PM ET maximum eclipse (partial umbral)iPhone 13 through Swarovski Optik Spotting Scope.

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

Startling Preliminary Results on Dark Energy

Posted on September 29, 2024 by ST Editors

By Rich Sherman “Perhaps, says DESI’s scientists, the density [of dark energy] is changing over time…. If the findings prove true, it would catapult cosmology into a crisis.” –The Economist Every now and then there is an article that makes … Continue reading →

Posted in October 2024, Sidereal Times | 1 Comment

Snippets

Posted on September 28, 2024 by ST Editors

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 →

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From The Director

Posted on September 5, 2024 by ST Editors

by Rex Parker, PhD director@princetonastronomers.org Now Entering Our 62nd Year.  With the onset of monthly programs this fall at Peyton Hall we continue the quest of exploring AAAP’s opportunities in amateur astronomy.  The past few years speakers drew our interest … Continue reading →

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From The Program Chair

Posted on September 3, 2024 by ST Editors

by Victor Davis, Program Chair September MeetingThe September, 2024 meeting of the AAAP will take place in Peyton Hall on the campus of Princeton University on Tuesday, September 10th at 7:30 PM. As usual, the meeting is open to AAAP … Continue reading →

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Book Review

Posted on September 3, 2024 by ST Editors

by Rich Sherman Title: Under Alien Skies Author: Philip Plait Ph.D.  Publisher: W. W. Norton & Company Publication Date: May 2024 Grade:  B+ Hardback $16.04, Paperback $16.38 on Amazon Total Pages: 336 This is a fun book. The author takes … Continue reading →

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Flavors of Gravitational Waves

Posted on September 3, 2024 by ST Editors

by S. Prasad Ganti In 2015, gravity waves were detected by LIGO (Laser Interferometer Gravitational-wave Observatory) from the locations at Louisiana and Washington states. This proved one of the significant predictions of Einstein’s General theory of relativity. Generated by very … Continue reading →

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