In 1920, astronomers Harlow Shapley and Heber Curtis held a Great Debate. Shapley argued that the spiral nebulae were small ...

Between spotting galaxies that shouldn't exist, capturing the interstellar medium with unprecedented clarity, and identifying ...

Observations show Andromeda has a more active star formation history than the Milky Way, potentially due to a past galactic collision. NASA recently released images of the Andromeda galaxy ...

It seemed that these redshifted galaxies were all moving away from the Milky Way. Hubble’s results suggested the farther away a galaxy was ... during the big bang. NASA named its flagship ...

An artist's conception of the star speeding through the Milky Way galaxy. Reddish and purple lines depict quicker star movement. Credit: NASA / JPL-Caltech / R. Hurt (Caltech-IPAC) A conception of ...

Farhad Yusef-Zadeh/Northwestern University The supermassive black hole at the heart of the Milky Way is putting on a relentless display of flickers and flares, according to new observations from ...

Nasa's Hubble ... blue dwarf galaxy. This unique discovery was made by Yale doctoral student Imad Pasha. The galaxy is 250,000 light-years wide, twice the size of the Milky Way, with rings forming ...

Previously, scientists thought the entire universe existed within the Milky Way, per the NASA statement. But when Andromeda proved to be its very own galaxy, astronomers realized the universe was ...

and what effect they have had on the galaxy. Andromeda clearly has had a more active merger history than the Milky Way, and we can see that in the velocity plane quite clearly.” A young cluster of ...

"This is the first time that we can see such detailed structures for an external galaxy." Due to its proximity to the Milky Way, the Andromeda ... according to a NASA statement.

Last month, NASA released the most comprehensive survey of the closest galaxy to the Milky Way. Astronomers spent a decade compiling this special image with the Hubble Space Telescope and then ...