Category Archives: January 2026

From The Program Chair

by Victor Davis, Program Chair A Musician Investigates Space WeatherThe AAAP’s first meeting of the new year 2026 will take place in Peyton Hall on the campus of Princeton University on Tuesday, January 13th at 7:30 PM. As usual, the … Continue reading

Posted in January 2026, October 2025, Sidereal Times | Tagged , , , , , , | Leave a comment

Minutes of the December 9, 2025 Meeting

by Gene Allen, Secretary Director Rex Parker opened the meeting remotely on Zoom at 1934 while Assistant Director Bob Vanderbie presided in Peyton. There were 29 attending in the auditorium, in spite of a cold 30 degree walk from the … Continue reading

Posted in January 2026, Sidereal Times | Tagged , , | Leave a comment

Book Review

by Rich Sherman Book Review:  Hidden in the Heavens: How the Kepler Mission’s Quest for New Planets Changed How We View Our Own By Jason Steffen Publisher: Princeton University Press Date: 2024 Price on Amazon: $14.89 (hardcover) Grade A- This is … Continue reading

Posted in January 2026, Sidereal Times | Tagged , , , , , , | Leave a comment

From The Astrophotography Group

C/2025 A6 (Lemmon) taken by Daniel Opdyke Telescope:   Atrotech AT 72ED II 72mm aperture 430mm focal length f/6Mount:         Iopteron CEM 25 hypertunedExposures:   60 subframes @ 60 sec each over 1 nights for 1 hour of integration; ASI533MC-P; … Continue reading

Posted in January 2026, Sidereal Times | Tagged , | Leave a comment

The Celestial Transients

by S. Prasad Ganti A recent article in Scientific American about the Celestial transients piqued my mind. To quote “Transients are astronomically sized objects that change on human timescales—in seconds, hours, days. Transients, which are astronomical objects that appear suddenly … Continue reading

Posted in January 2026, Sidereal Times | Tagged , , , , , , , | Leave a comment

The Unchecked Growth of Orbital Debris

by Abhinav Sukla I don’t think it would be wrong to label the current era as the early dawn of the space age. Hardly half a century has passed since the first rockets left our atmosphere. Even in the early … Continue reading

Posted in January 2026, Sidereal Times | Tagged , , , , | Leave a comment

Impact of Relativity on the Hubble Equation

by William H. Davis The Hubble equation  v=Ho/dv= H_o/d is commonly used to estimate distances to distant objects emitting light. The observations by a number of astronomers, even before Hubble, recognized a relationship between velocity and distance of nearby objects. … Continue reading

Posted in January 2026, Sidereal Times | Tagged , , | Leave a comment

Snippets

compiled by Arlene & David Kaplan Did Astronomers See a Star Explode Twice? Astronomers may have spotted their first superkilonova — a star that’s exploded not once, but twice. When massive stars die, they detonate in a celestial fireworks display known as … Continue reading

Posted in January 2026, Sidereal Times | Tagged , | Leave a comment