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This is a photo of the crown of The Stellar Spire atop of the 9.5 light-year, or 57
trillion mile long billowing tower of cold gas and dust rising from a stellar
nursery called the Eagle Nebula M16, also known as NGC 6611 . The soaring
tower, that this "crown" sits atop of, is 9.5 light-years tall, or the equivalent in
distance of, twice the distance from our sun to the next nearest star. The edge
of the dark hydrogen cloud at the top of the tower is resisting erosion, in a
manner similar to that of brush among a field of prairie grass that is being swept
up by fire. The fire quickly burns the grass but slows down when it encounters
the dense brush. In this celestial case, thick clouds of hydrogen gas and dust
have survived longer than their surroundings in the face of a blast of ultraviolet
light from the hot, young stars surrounding it. Inside the gaseous tower, stars
may be forming. Some of those stars may have been created by dense gas
collapsing under gravity. Other stars may be forming due to pressure from gas
that has been heated by the neighboring hot stars. The first wave of stars may
have started forming before the massive star cluster began venting its
scorching light. The star birth may have begun when denser regions of cold gas
within the tower started collapsing under their own weight to make stars. The
fledgling stars in this nebula continued to grow as they fed off the surrounding
gas cloud. They abruptly stopped growing when light from the star cluster
uncovered their gaseous cradles, separating them from their gas supply.
Ironically, the young cluster's intense starlight may be inducing star formation in
some regions of the tower. Examples can be seen in the large, glowing clumps
and finger-shaped protrusions at the top of the structure. The stars may be
heating the gas at the top of the tower and creating a shock front, as seen by the
bright rim of material tracing the edge of the nebula at top, left. As the heated
gas expands, it acts like a battering ram, pushing against the darker cold gas.
The intense pressure compresses the gas, making it easier for stars to form.
This scenario may continue as the shock front moves slowly down the tower.
The dominant colors in this image were produced by gas energized by the star
cluster's powerful ultraviolet light. The blue color at the top is from glowing
oxygen. This image of the Eagle Nebula was taken in 2004 by Hubble's
Advanced Camera for Surveys. This star-forming region is located 6500
light-years away in the constellation Serpens.
One light-year = traveling @ 186,000 miles per second,
x 60 seconds per minute, x 60 minutes per hour,
x 24 hours in one day, x 365 days per year!
Multiplied By 6500 To Reach The Eagle Nebula!