Traveling
above Jupiter at more than 130,000 miles per hour, NASA's $1 billion Juno probe
took its ninth set of stunning flyby images on October 24. But the sun slipped
between the giant planet and Earth for more than a week, blocking the
spacecraft from beaming home its precious bounty of data.
Now that
the conjunction is over, however, new raw image data from Juno's ninth perijove
— as the spacecraft's high-speed flybys are called — has poured in. Researchers
posted it all online on Tuesday, and a community of amateurs and professionals has
been busily processing the data to yield colorful and stunning new pictures of
Jupiter.
Below are
some fresh, close-up images of Jupiter, along with other unbelievable views
captured from earlier perijoves.
In the
most recent flyby, as with the previous eight, Juno's flyby started over
Jupiter's north pole.
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The
spacecraft then swept within a few thousand miles of the gas giant, capturing
stunning high-resolution views of its cloud tops.
At its
closest approach to Jupiter during each flyby, the robot briefly becomes the
fastest human-made object in the solar system, reaching speeds of around
130,000 miles per hour.
Then Juno
flew back out into deep space, passing over Jupiter's South Pole on its exit.
Churning storms at the poles constantly change their appearance.
Researchers upload the raw data sent by the probe to the mission's website.
There,
enthusiasts take the drab, mostly gray image data and process it all into
true-to-life color photos.
Many
snapshots of Jupiter take on an artistic quality.
Others
dazzle with their detail of the planet's thick cloud bands and powerful storms.
Jupiter is made up predominantly of hydrogen. The simple, basic gas, a prime
ingredient on the sun, accounts for 90 percent of the atmosphere. Nearly 10
percent is composed of helium.
Some of
the tempests are large enough to swallow planet Earth — or at least a good
chunk of it.
The
planet's atmosphere is a turbulent mess of hydrogen and helium gases. The
atmosphere of Jupiter is the largest planetary atmosphere in the Solar System.
It is mostly made of molecular hydrogen and helium in roughly solar
proportions; other chemical compounds are present only in small amounts and
include methane, ammonia, hydrogen sulfide and water.
There are also traces of molecules like ammonia, methane, sulfur, and water, which give the clouds different colors and properties.
The
mixture sometimes creates features that look like faces (as seen on the left in
this image).
Other
times, shining-white clouds fill up most of a band. With an average temperature
of minus 234 degrees Fahrenheit (minus 145 degrees Celsius), Jupiter is frigid
even in its warmest weather. Unlike Earth, whose temperature varies as one
moves closer to or farther from the equator, Jupiter's temperature depends more
on height above the surface.
Many cloud
bands have features called chevrons. These atmospheric disturbances blow at
several hundreds of miles per hour and sometimes zig-zag through a band, or
punch through into others.
In this
older view of Jupiter, from Juno's eighth perijove, two cloud bands battle for
dominance — one of which contains a swirling storm many times larger than a
hurricane on Earth.
The
spacecraft will continue to document Jupiter for as long as NASA can keep it
going. But not forever.
Updated Version.