On Dec. 15, 1612, the Andromeda galaxy was seen through a telescope for the first time by a German astronomer named Simon Marius. [‘On This Day in Space’ Video Series on Space.com] The Andromeda ...
Despite being one of the most venerable and prominent objects in the night sky, the Andromeda Galaxy (M31) still has surprises. And a group of amateur astronomers have uncovered the latest: a ...
Cepheid stars have predictable brightness changes linked to their periods. This period-brightness relationship lets astronomers calculate a Cepheid's distance. Hubble found a Cepheid in the Andromeda ...
Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. M31, the spiral galaxy in Andromeda, with its two companion ...
One of astronomy’s deepest mysteries is the “radio star,” an object in space that “shines” with radio waves instead of with .visible light. The first radio stars were discovered only about two years ...
This time of year, you have the best chance to see the farthest thing away that you can see with the unaided human eye in our Rochester night sky. Away from heavy city lighting, look in the ...
An incredible picture of the Andromeda Galaxy has captured viral attention online after it was shared by an amateur photographer. Brennan Gilmore, who lives in Cismont, Virginia, shared the picture on ...
One of the more interesting features of the late summer and early autumn Colorado sky is the faint band of light that now stretches from Sagittarius in the southwest to Perseus in the northeast and ...
Astronomy can be a difficult topic for newcomers. Like any scientific field, it has its own jargon and buzzwords—and terms with meanings that can be not only odd but downright counterintuitive. The ...
Edwin Powell Hubble was born on November 20, 1889, in Marshfield, Missouri. In high school he was known for his sports prowess. He led the University of Chicago basketball team to their first Big Ten ...
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How did Edwin Hubble prove Andromeda was a galaxy?
How did a Cepheid variable star help Edwin Hubble prove the Andromeda Nebula was a galaxy? Roger Brady San Quentin, California Cepheids are rare variable stars with periods ranging from about 1 to 120 ...
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