Spiral Galaxy Like Our Own Shines With Pink Clouds

The wispy arms of a spiral galaxy similar to our own Milky Way can be seen in striking detail in a new image from the European Southern Observatory.

NGC 300, located in the Sculptor Group of galaxies about 6 million light-years from Earth, was photographed by the Wide Field Imager (WFI) at ESO's La Silla Observatory in Chile. [New photo of galaxy NGC 300.]

The many energetic star-forming regions along NGC 300's spiral arms are visible in the picture as red and pink clouds.

The image, which was taken with a 50-hour exposure, gives a clear view of NGC 300's structure and shows the apparent size of the galaxy, which is about two-thirds the size of the full moon against the sky.

NGC 300 was discovered by Scottish astronomer James Dunlop, who spotted the bright galaxy from Australia in the early 19th century. As a relatively nearby galaxy that is quite prominent in the southern skies, NGC 300 actually can be seen with regular binoculars.

The galaxy is located in the constellation Sculptor, which contains a few bright stars but is made up of a collection of galaxies that form the Sculptor Group. Other known galaxies that belong to this group include NGC 55, NGC 253 and NGC 7793.

The new image was assembled from a series of separate images that were taken through different filters with a total exposure time of close to 50 hours. The resulting data were collected over the course of many nights of observation that spanned several years.