M51: The Whirlpool Galaxy from Hubble

APOD: 2022 June 13 - M51: The Whirlpool Galaxy from Hubble

Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.

2022 June 13
The featured image shows the nearby Whirlpool Galaxy
cataloged as Messier 51. Detail spiral arms of this spiral
galaxy are visible, as well as its interaction with a 
smaller galaxy on the image left.
Please see the explanation for more detailed information.

M51: The Whirlpool Galaxy from Hubble
Image Credit: NASA, ESA, Hubble, HLA; Processing & Copyright: Bernard Miller

Explanation: The Whirlpool Galaxy is a classic spiral galaxy. At only 30 million light years distant and fully 60 thousand light years across, M51, also known as NGC 5194, is one of the brightest and most picturesque galaxies on the sky. The featured image is a digital combination of images taken in different colors by the Earth-orbiting Hubble Space Telescope, highlighting many sharp features. Anyone with a good pair of binoculars, however, can see this Whirlpool toward the constellation of the Hunting Dogs (Canes Venatici). M51 is a spiral galaxy of type Sc and is the dominant member of a whole group of galaxies. Astronomers speculate that M51's spiral structure is primarily due to its gravitational interaction with the smaller galaxy on the image left.

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