The Simplest Explanation for Ultra-High-Energy Cosmic Rays
The highest-energy particles could be a sign of new, unexpected physics. But the simplest, most mundane explanation is particularly iron-ic.
The highest-energy particles could be a sign of new, unexpected physics. But the simplest, most mundane explanation is particularly iron-ic.
Mid-infrared observations from NASA’s James Webb Space Telescope, shown in white, gray, and red, are combined here with X-ray data from NASA’s Chandra X-ray Observatory, highlighted in blue. Together, these different wavelengths reveal a detailed and layered view of a pair of colliding spiral galaxies, captured in an image released on Dec. 1, 2025.
The Rudolph Planetarium has been enhanced with the addition of multicolor LED cove lights.
Presenter: Erin Leigh Howard, Rubin scientist & BPAA Education Director
Saturday, December 13th at 6 pm
We’re teaming up with Parks and Rec once again for out-of-this-world classes! Introduction to Astronomy 101 (ages 16+) is back with another fantastic lineup of classes to get you off to a great start in astronomy.
The Women in STEM book club will meet on Zoom on the fourth Tuesday of each month at 6pm, starting in January. While we are still putting everything together, we have the first three books ready for you!
January 27th: Hidden Figures by Margot Lee Shetterly
February 24th: The Other Einstein by Marie Benedict
March 24th: Galileo’s Daughter by Dava Sobel
Our Education Director Erin Howard reported another successful year at Geek Girl Con!
Saturdays on December 6, 13 and 27: Planetarium Shows at Battle Point Observatory. Shows offered at 12:30 pm and again at 2:30 pm.
The Battle Point Observatory has been invited by the Jett Foundation to attend a stargazing event for their Camp Promise summer camp this June.