GraviWaves Astro AnswersPublished February 26, 2016 at dimensions 2550 × 3301 in Astro Answers – Gravitational Waves: What are they?.
Amateur Astronomers Association of New YorkPublished February 22, 2015 at dimensions 1500 × 1001 in Amateur Astronomers Association of New York.
michaelrichmondPublished February 11, 2015 at dimensions 654 × 817 in Astronomy Workshop: Observing Variable Stars from the City – February 15, 2015.