Hubble sees spiral in Andromeda
The Andromeda constellation is one of the 88 modern constellations and should not be confused with our neighboring Andromeda Galaxy. The Andromeda constellation is home to the pictured galaxy known as NGC 7640.
|The Andromeda constellation is home to the pictured galaxy known as NGC 7640 |
[Credit: ESA/Hubble & NASA]
There is evidence that NGC 7640 has experienced some kind of interaction in its past. Galaxies contain vast amounts of mass, and therefore affect one another via gravity. Sometimes these interactions can be mild, and sometimes hugely dramatic, with two or more colliding and merging into a new, bigger galaxy. Understanding the history of a galaxy, and what interactions it has experienced, helps astronomers to improve their understanding of how galaxies -- and the stars within them -- form.
Source: NASA/Goddard Space Flight Center [February 10, 2017]