For this image, the NASA/ESA Hubble Space Telescope turned its powerful eye toward an emission-line galaxy called NGC 3749. When astronomers explore the contents and constituent parts of a galaxy somewhere in the Universe, they use various techniques and tools. By hunting for specific signs of emission from various elements within a galaxy's spectrum of light - so-called emission lines - or, conversely, the signs of absorption from other elements, so-called absorption lines, astronomers can start to deduce what might be happening within. While not all galaxies display strong emission lines, NG

For this image, the NASA/ESA Hubble Space Telescope turned its powerful eye toward an emission-line galaxy called NGC 3749. When astronomers explore the contents and constituent parts of a galaxy somewhere in the Universe, they use various techniques and tools. By hunting for specific signs of emission from various elements within a galaxy's spectrum of light - so-called emission lines - or, conversely, the signs of absorption from other elements, so-called absorption lines, astronomers can start to deduce what might be happening within. While not all galaxies display strong emission lines, NG Stock Photo
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Image details

Contributor:

UPI / Alamy Stock Photo

Image ID:

2ABAJ28

File size:

43 MB (639.7 KB Compressed download)

Releases:

Model - no | Property - noDo I need a release?

Dimensions:

4000 x 3759 px | 33.9 x 31.8 cm | 13.3 x 12.5 inches | 300dpi

Date taken:

26 November 2019

Photographer:

UPI

More information:

This image could have imperfections as it’s either historical or reportage.

For this image, the NASA/ESA Hubble Space Telescope turned its powerful eye toward an emission-line galaxy called NGC 3749. When astronomers explore the contents and constituent parts of a galaxy somewhere in the Universe, they use various techniques and tools. By hunting for specific signs of emission from various elements within a galaxy's spectrum of light - so-called emission lines - or, conversely, the signs of absorption from other elements, so-called absorption lines, astronomers can start to deduce what might be happening within. While not all galaxies display strong emission lines, NGC 3749 does. It lies over 135 million light-years away and is moderately luminous. The galaxy has been used as a "control" in studies of especially active and luminous galaxies - those with centers known as active galactic nuclei, which emit copious amounts of intense radiation. In comparison to these active cousins, NGC 3749 is classified as inactive, and has no known signs of nuclear activity. NASA/UPI

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