The Milky Way’s big sister

This image taken by the NASA/ESA Hubble Space Telescope’s Wide Field Camera 3 (WFC3) shows a beautiful spiral galaxy called NGC 6744. At first glance, it resembles our Milky Way albeit larger, measuring more than 200 000 light-years across compared to 100 000 light-year diameter for our home galaxy.

NGC 6744 is similar to our home galaxy in more ways than one. Like the Milky Way, NGC 6744 has a prominent central region packed with old yellow stars. Moving away from the galactic core, one can see parts of the dusty spiral arms painted in shades of pink and blue; while the blue sites are full of young star clusters, the pink ones are regions of active star formation, indicating that the galaxy is still very lively.

In 2005, a supernova, named 2005at, was discovered within NGC 6744, adding to the argument of this galaxy’s liveliness (not visible in this image). SN 2005at is a type Ic supernova, formed when a massive star collapses in itself and loses its hydrogen envelope.

Credit:

ESA/Hubble & NASA
Acknowledgement: Judy Schmidt

About the Image

Id:potw1830a
Type:Observation
Release date:23 July 2018, 06:00
Size:4076 x 4095 px

About the Object

Name:NGC 6744
Type:Local Universe : Galaxy : Type : Spiral
Distance:35 million light years
Constellation:Pavo
Category:Galaxies

Image Formats

Large JPEG
10.7 MB
Screensize JPEG
420.6 KB

Zoomable


Wallpapers

1024x768
425.9 KB
1280x1024
777.2 KB
1600x1200
1.2 MB
1920x1200
1.4 MB
2048x1536
2.1 MB

Coordinates

Position (RA):19 9 43.58
Position (Dec):-63° 51' 9.57"
Field of view:2.69 x 2.70 arcminutes
Orientation:North is 120.1° left of vertical

Colours & filters

BandWavelengthTelescope
Ultraviolet
UV
275 nm Hubble Space Telescope
WFC3
Optical
U
336 nm Hubble Space Telescope
WFC3
Optical
B
438 nm Hubble Space Telescope
WFC3
Optical
y
547 nm Hubble Space Telescope
WFC3
Optical
V
555 nm Hubble Space Telescope
WFC3
Optical
H-alpha + NIII
657 nm Hubble Space Telescope
WFC2
Optical
I
817 nm Hubble Space Telescope
WFC3

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