Religion and astronomy may not overlap often, but a new NASA X-ray image
captures a celestial object that resembles the "Hand of God."
The
cosmic "hand of God" photo was produced when a star exploded and
ejected an enormous cloud of material, which NASA's Nuclear
Spectroscopic Telescope Array, or NuSTAR, glimpsed in high-energy
X-rays, shown in blue in the photo. NASA's Chandra X-ray Observatory had
imaged the green and red parts previously, using lower-energy X-rays.
"NuSTAR's
unique viewpoint, in seeing the highest-energy X-rays, is showing us
well-studied objects and regions in a whole new light," NuSTAR telescope
principal investigator Fiona Harrison, of the California
Institute of
Technology in Pasadena, said in a statement.
The new image
depicts a pulsar wind nebula, produced by the dense remnant of a star
that exploded in a supernova. What's left behind is a pulsar, called PSR
B1509-58 (B1509 for short), which spins around 7 times per second
blowing a wind of particles into material ejected during the star's
death throes.
As these particles interact with nearby magnetic
fields, they produce an X-ray glow in the shape of a hand. (The pulsar
is located near the bright white spot in the image but cannot be seen
itself, NASA officials said.)
Scientists aren't sure whether the
ejected material actually assumes the shape of a hand, or whether its
interaction with the pulsar's particles is just making it appear that
way.
"We don't know if the hand shape is an optical illusion,"
Hongjun An, of McGill University in Montreal, said in a statement. "With
NuSTAR, the hand looks more like a fist, which is giving us some
clues."
The red cloud appearing at the fingertips is a separate
structure called RCW 89. The pulsar's wind may be heating the cloud to
produce the low-energy X-ray glow, astronomers believe.
The X-ray
energies seen by NuSTAR range from 7 to 25 kiloelectron volts, or keV,
whereas the energies seen by Chandra range from 0.5 to 2 keV.
The
Hand of God is an example of pareidolia, the psychological phenomenon
of perceiving familiar shapes in random or vague images. Other common
forms of pareidolia include seeing animals or faces in clouds, or the
man in the moon. Despite its supernatural appearance, the Hand of God
was produced by natural astrophysical phenomena.
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