Media Information
 
 
 
Collection:
NASA Astronomy Picture of the Day Collection
Title:
Elements of Nearby Spiral M33
Explanation:
Spiral galaxy [ http://www.seds.org…] M33 is a mid-sized member of our Local Group of Galaxies [ http://www.seds.org…]. M33 [ http://antwrp.gsfc.…] is also called the Triangulum Galaxy [ http://www.seds.org…] for the constellation [ http://www.astronom…] in which it resides. About four times smaller (in radius) than our Milky Way Galaxy [ http://www.star.le.…] and the Andromeda Galaxy [ http://antwrp.gsfc.…] (M31), it is much larger than the many of the local dwarf spheroidal [ http://antwrp.gsfc.…] galaxies. M33 [ http://antwrp.gsfc.…]'s proximity to M31 [ http://antwrp.gsfc.…] causes it to be thought by some to be a satellite galaxy of this more massive galaxy. M33 [ http://sirtf.caltec…]'s proximity to our Milky Way Galaxy [ http://antwrp.gsfc.…] causes it to appear more than twice the angular size of the Full Moon [ http://antwrp.gsfc.…], and be visible with a good pair of binoculars. The above high-resolution image [ http://www.lowell.e…] highlights light emitted by hydrogen [ http://periodic.lan…] in red and oxygen [ http://periodic.lan…] in blue. It was taken to help separate stars from emission nebulae [ http://antwrp.gsfc.…], and therefore help study [ http://www.aas.org/…] how galaxies form stars.
Credit and Copyright:
Nichole King [ mailto:nking@stsci.e du ] (STScI [ http://www.stsci.ed…]) et al. [ http://www.lowell.e…], Mayall Telescope [ http://www.noao.edu…mayall.html ], KPNO [ http://www.noao.edu…], NOAO [ http://www.noao.edu/], NSF [ http://www.nsf.gov/]
keyword:
spiral galaxy
keyword:
M33
facet_where:
Milky Way Galaxy
facet_where:
M31
facet_where:
Andromeda Galaxy
facet_where:
M33
facet_where:
Triangulum Galaxy
facet_where:
Goddard Space Flight Center (GSFC)
facet_what:
Moon
facet_what:
Andromeda
facet_what:
USERS
facet_what:
Triangulum
facet_what:
SIRTF
original url:
http://antwrp.gsfc.…
UID:
SPD-APOD-ap010927

Elements of Nearby Spiral M33
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