Every spring, amateur astronomers around the world take on the challenge of trying to observe all 110 objects in Charles Messier's storied catalog of deep-sky objects in a single night. Because of the ...

M31, the Andromeda Galaxy, and its satellite galaxies M32 (a hazy star just above-left of M31's center) and M110 (the oval structure below-left of M31's center). Photograph taken at Kopernik ...

Anyone spotting a globular star cluster like M13 for the first time through an amateur telescope will recognize a fascinating white spot, which at first glance could also be a comet without a ...

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French astronomer Charles Messier's list of the best and brightest deep sky objects is popular with skywatchers of all experience levels. During the new moon period in early spring each year, it's ...

"Deep Sky Companion" at the Cahill Center for Astronomy and Astrophysics. Credit: Lia Halloran For her latest exhibition, called “Deep Sky Companion,” artist Lia Halloran was inspired not by the ...