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Astronomy Picture of the Day
The Closest Galaxy: Canis Major Dwarf
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zorg.ch
#104498
by
[z]Barbara Harris
@
05.11.2007 00:00
- nach oben -
The Closest Galaxy: Canis Major Dwarf
Explanation: What is the closest galaxy to the Milky Way? The new answer to this old question is the
Canis Major dwarf galaxy
. For many years astronomers thought the
Large Magellan Cloud
(LMC) was closest, but its title was supplanted in 1994 by the
Sagittarius dwarf galaxy
. Recent measurements indicate that the
Canis Major
dwarf is only
42
,000
light years
from the
Galactic center
, about three quarters of the distance to the
Sagittarius dwarf
and a quarter of the distance to the LMC. The discovery was made in data from the
2MASS
-sky survey, where
infrared
light allows a better view through our optically opaque
Galactic plane
. The
labeled illustration above
shows the location of the newly discovered Canis Major dwarf and its associated
tidal stream
of material in relation to our
Milky Way Galaxy
. The
Canis Major dwarf
and other
satellite galaxies
are slowly being
gravitationally ripped apart
as they travel around and through our Galaxy.
Credit & Copyright
zorg.ch
#104603
by
Squeezer
@
13.11.2007 07:52, edited @
13.11.2007 07:53
- nach oben -
wieso isch denn döt eis pünktli mit "sun" agschribe? sind nöd alles sunne susch chönnt mers nöd gseh? Kläret mich uf!
zorg.ch
#104619
by
Cédi
@
13.11.2007 18:01
- nach oben -
momoll sinds natüorli, aber mit sonne oder sun meint mer amel üsi sunne, wobi ihren wohre name glaub "sol" isch. wenn mer alli lüchtibüchtis meint, seit mer scho ehner sterne oder stars.