Loops and Nebulae

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A dark nebula
Lupus 4, a dark nebula (image credit: ESO).

This nebula, named Lynds' Dark Nebula (LDN) 1622 (the 1622 dark nebula catalogued by Beverly T. Lynds), is a dim and dusty cloud of gas. It is approximately 500 light years away (meaning, it takes light about 500 years to travel the distance), and about 10 light-years across (which would be about 10x bigger than our solar system). Lynds' list originally contained 1802 objects she found by visual inspection of the Palomar Observatory Sky Survey (POSS I) catalog. POSS I was a survey that imaged the entire northern portion of the sky in blue and red colours, taken over 1949-1958 at the Palomar Observatory in southern California.

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Loops and Nebulae
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Jesse Rogerson, PhD

Jesse is a passionate scientist, educator, and science communicator. As an assistant professor at York University in the Department of Science, Technology, and Society, he teaches three classes: History of Astronomy, Introduction to Astronomy, and Exploring the Solar System. He frequently collaborates with the Canada Aviation and Space Museum, and lends his expert voice to the Ingenium Channel. Jesse is an astrophysicist, and his research explores how super massive black holes evolve through time. Whether in the classroom, through social media, or on TV, he encourages conversations about how science and society intersect, and why science is relevant in our daily lives.