Astronomers Learn About Alien Galaxy's Evolution Through Images, Believe 'Something Significant Happened Not Too Long Ago' ...

Andromeda XXXV is only about 20,000 times more massive than our Sun—very small, even for a satellite galaxy. For comparison, ...

For three months, McCarthy’s telescopes took hundreds of long-exposure photos, carefully piecing ... McCarthy’s stunning photo of the Andromeda Galaxy excels in color depth and contrast ...

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"It was actually a total surprise to find the satellites in that configuration and we still don’t fully understand why they appear that way." ...

Fluffy strands of cosmic gas and dust illuminated by bright young stars form a beautiful cloudscape in a neighboring nebula.

Not only is Andromeda XXXV the dimmest and smallest known satellite galaxy in the Andromeda system, it's about 3 million light-years away, making it very hard to spot. The ellipse within the inset ...

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One of the great places to look for dwarf galaxies is the halo of the Andromeda galaxy (also known as Messier 31, or M31 for short), due to its relative proximity. UNIONS is so far the deepest ...

This is a wide-angle view of the distribution of known satellite galaxies orbiting the large Andromeda galaxy (M31), located 2.5 million light-years away. The Hubble Space Telescope was used to ...