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Credit & Copyright: Robert Gendler
Explanation:
Spiral galaxies viewed face-on display a
grand design, with
graceful spiral arms traced by bright star clusters and
glowing stellar nurseries.
When seen edge-on, their appearance is very different but no less striking
as their central regions bulge and dark cosmic
dust lanes appear silhouetted against starlight from flattened galactic disks.
This masterful mosaic of
digital images
shows nine prominent edge-on
spirals arranged as follows:
top;
NGC2683,
M104,
NGC4565,
middle;
NGC891,
NGC4631,
NGC3628, and
bottom;
NGC5746,
NGC5907, and
NGC4217.
Perhaps the best known of these is
M104 (NGC4594)
whose
more descriptive moniker is the Sombrero Galaxy.
Notably, the edge-on perspective of these galaxies
allows
a measurement of their
galactic rotation speed using the
Doppler
effect.
Plotting rotation
speed versus distance from the
center determines a galaxy's gravitational mass and
historically led to premier evidence
of the mysterious dark matter.
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NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.
Based on Astronomy Picture
Of the Day
Publications with keywords: dust - edge-on - spiral galaxy
Publications with words: dust - edge-on - spiral galaxy
See also:
- APOD: 2026 May 29 Á Messier 104
- APOD: 2026 April 5 Á NGC 3310: A Starburst Spiral Galaxy
- APOD: 2026 March 16 Á NGC 1566: The Spanish Dancer Galaxy
- Webb and Hubble: IC 5332
- APOD: 2026 February 4 Á Spiral Galaxy NGC 1512: Wide Field
- LDN 1622: Dark Nebula in Orion
- Barred Spiral Galaxy NGC 1365 from Webb