From afar, the whole thing looks like an
A closer look at the
however, shows the
region is actually a window into the center of a larger dark shell of
Through this window, a brightly-lit
where a whole open cluster
of stars is being formed.
In this cavity
tall pillars and
round globules of dark dust and cold
Did this mirage help sink the Titanic?
The optical phenomenon called
Fata Morgana can make
strange shapes or a
false wall of water appear above a watery horizon.
When conditions are right, light reflecting off of cold water will be
bent by an unusual layer of warm air above to arrive at the observer from several different angles.
A conceptually comparable
mirage can make a
How many moons does Saturn have?
So far 62 have
been discovered, the smallest only a fraction
of a kilometer across.
Six of its largest satellites can be seen here, though, in a sharp
Saturnian family portrait
taken on March 9.
Larger than Earth's Moon and even slightly larger than Mercury,
has a diameter of 5,150 kilometers and starts the line-up
at the lower left.