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Astronomy Picture of the Day
A Jet from Galaxy M87
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#113336
by
[z]Barbara Harris
@
29.08.2011 00:00
- nach oben -
A Jet from Galaxy M87
Explanation: What's causing a huge jet to emanate from the center of galaxy
M87
? Although the
unusual jet
was first noticed early in the
twentieth century
, the exact cause is still debated. The
above picture
taken by the
Hubble Space Telescope
in 1998 shows clear details, however. The most
popular hypothesis
holds that the
jet
is created by energetic gas swirling around a massive
black hole
at the galaxy's center. The result is a 5000
light-year
long
blowtorch
where
electrons
are ejected outward at near light-speed,
emitting eerily blue light
during a magnetic spiral.
M87
is a giant
elliptical galaxy
residing only 50 million light-years away in the
Virgo Cluster of Galaxies
. The faint dots of light
surrounding
M87
's center are large ancient
globular clusters
of stars.
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