Become a member and save up to 17% on your program registration price! Join today If you are already a member, log in to access your member price. The NASA Landolt Space Mission Presented in partnership with George Mason University Observatory Evening Lecture/Seminar Tuesday, May 6, 2025 - 7:00 p.m. to 9:00 p.m. ET Code: 1J0452 Location: This online program is presented on Zoom. Select your Registration Login $25 Member 0 1 2 3 4 5 6 7 8 9 10 $30 Non-Member Adding to your cart... Add to cart Log in to add this program to your wishlist! A 10% processing fee will be applied at checkout. Resize text (Logo design by Bert Pasquale, NASA Landolt mission) George Mason University will be the home of the recently approved NASA Landolt space mission that will put an artificial star into orbit around Earth. It will allow scientists to calibrate telescopes and more accurately measure the brightnesses of stars, whether nearby or exploding in far-off galaxies. By establishing highly accurate brightness measurements of photon rates, the mission will help advance humanity’s understanding of several challenging questions in astrophysics, including the speed and acceleration of the expansion of the universe. The science associated with the mission and what astronomers hope to learn from it are explained by Peter Plavchan, the mission’s principal investigator and associate professor of physics and astronomy at George Mason University. Following the talk and a question-and-answer period, Rob Parks, director of the George Mason Observatory, brings the skies into your living room with remote control of the university observatory, weather permitting. General Information View Common FAQs and Policies about our Online Programs on Zoom.