Orbiter-Forum  

Go Back   Orbiter-Forum > Far Side of the Moon > Spaceflight News
Register Blogs Orbinauts List Social Groups FAQ Projects Mark Forums Read

Spaceflight News Share news, stories, or discussions about government and private spaceflight programs; including ESA, ISS, NASA, Russian Space Program, Virgin Galactic, & more!

Reply
 
Thread Tools
Old 02-06-2017, 06:31 AM   #181
Nicholas Kang
Spaceflight News Reporter
 
Nicholas Kang's Avatar

Default Update: It’s Never 'Groundhog Day' at Jupiter

Official NASA Press Statement: https://www.nasa.gov/feature/jpl/it-...day-at-jupiter



Quote:
Cyclones swirl around the south pole, and white oval storms can be seen near the limb -- the apparent edge of the planet -- in this image of Jupiter’s south polar region taken by the JunoCam imager aboard NASA’s Juno spacecraft.
Credits: NASA/JPL-Caltech/SwRI/MSSS
Updated Feb. 2, 2017 at 3:15 p.m. PST

NASA's Juno mission completed a close flyby of Jupiter on Thursday, Feb. 2, its latest science orbit of the mission.

All of Juno’s science instruments and the spacecraft's JunoCam were operating during the flyby to collect data that is now being returned to Earth. Juno is currently in a 53-day orbit, and its next close flyby of Jupiter will occur on March 27, 2017.

At the time of closest approach (called perijove), Juno was about 2,670 miles (4,300 kilometers) above the planet's cloud tops and traveling at a speed of about 129,000 mph (57.8 kilometers per second) relative to the gas giant. All of Juno's eight science instruments, including the Jovian Infrared Auroral Mapper (JIRAM) instrument, were on and collecting data during the flyby.

Last edited by Nicholas Kang; 02-06-2017 at 06:49 AM.
Nicholas Kang is offline   Reply With Quote
Thanked by:
Old 02-20-2017, 12:49 AM   #182
orb
O-F Administrator
Ninja
 
orb's Avatar

Default

Universe Today: Juno Will Get No Closer To Jupiter Due To Engine Troubles

NASA: NASA’s Juno Mission to Remain in Current Orbit at Jupiter
orb is offline   Reply With Quote
Old 03-25-2017, 06:52 AM   #183
Nicholas Kang
Spaceflight News Reporter
 
Nicholas Kang's Avatar

Default

NASA: NASA’s Juno Spacecraft Set for Fifth Jupiter Flyby



Quote:
NASA's Juno spacecraft will make its fifth flyby over Jupiter's mysterious cloud tops on Monday, March 27, at 1:52 a.m. PDT (4:52 a.m. EDT, 8:52 UTC).

At the time of closest approach (called perijove), Juno will be about 2,700 miles (4,400 kilometers) above the planet's cloud tops, traveling at a speed of about 129,000 miles per hour (57.8 kilometers per second) relative to the gas-giant planet. All of Juno's eight science instruments will be on and collecting data during the flyby.

"This will be our fourth science pass -- the fifth close flyby of Jupiter of the mission -- and we are excited to see what new discoveries Juno will reveal,” said Scott Bolton, principal investigator of Juno from the Southwest Research Institute in San Antonio. "Every time we get near Jupiter’s cloud tops, we learn new insights that help us understand this amazing giant planet."
Updates from previous flybys:

Quote:
The Juno science team continues to analyze returns from previous flybys. Scientists have discovered that Jupiter's magnetic fields are more complicated than originally thought, and that the belts and zones that give the planet's cloud tops their distinctive look extend deep into the its interior. Observations of the energetic particles that create the incandescent auroras suggest a complicated current system involving charged material lofted from volcanoes on Jupiter's moon Io.

Peer-reviewed papers with more in-depth science results from Juno's first flybys are expected to be published within the next few months.
Nicholas Kang is offline   Reply With Quote
Old 04-01-2017, 04:07 AM   #184
Unstung
Cassini 2017
 
Unstung's Avatar
Default

This photo looks like it's straight from 2001:



source
Unstung is offline   Reply With Quote
Old 05-26-2017, 04:30 AM   #185
Notebook
Donator
 
Notebook's Avatar


Default

Quote:
Juno peers below Jupiter's clouds
http://www.bbc.co.uk/news/science-environment-40053527
Notebook is online now   Reply With Quote
Thanked by:
Old 05-26-2017, 06:15 AM   #186
Ravenous
Donator
Default

Quote:
That polar picture is just extraordinary. Takes me back to Voyager at Jupiter, when I was a kid.

I'm now reflecting back on the earlier days of this mission, when it was about gravity and magnetic field readings and the camera was considered little more than an "optional extra".
Ravenous is offline   Reply With Quote
Thanked by:
Old 06-20-2017, 10:40 AM   #187
Unstung
Cassini 2017
 
Unstung's Avatar
Default



I was concerned about whether Juno would be able to complete all its intended orbits with a 53 day period. Bolton (at about 1 hr 9 min) said that all 32 orbits can still be performed.
Unstung is offline   Reply With Quote
Thanked by:
Old 07-11-2017, 01:57 AM   #188
Nicholas Kang
Spaceflight News Reporter
 
Nicholas Kang's Avatar

Default

6th Science Flyby occurs at Perijove just a few minutes ago.







This time, Juno flies over Jupiter's Great Red Spot, shortly after perijove.







4 antennas at Goldstone DSN in California are tracking Juno.



However,


Last edited by Nicholas Kang; 07-11-2017 at 02:11 AM.
Nicholas Kang is offline   Reply With Quote
Thanked by:
Old 12-12-2017, 08:31 AM   #189
Nicholas Kang
Spaceflight News Reporter
 
Nicholas Kang's Avatar

Default



NASA's Juno Probes the Depths of Jupiter's Great Red Spot






Quote:
Data collected by NASA's Juno spacecraft during its first pass over Jupiter's Great Red Spot in July 2017 indicate that this iconic feature penetrates well below the clouds. Other revelations from the mission include that Jupiter has two previously uncharted radiation zones. The findings were announced Monday at the annual American Geophysical Union meeting in New Orleans.

"One of the most basic questions about Jupiter's Great Red Spot is: how deep are the roots?" said Scott Bolton, Juno's principal investigator from the Southwest Research Institute in San Antonio. "Juno data indicate that the solar system's most famous storm is almost one-and-a-half Earths wide, and has roots that penetrate about 200 miles (300 kilometers) into the planet's atmosphere."

"Juno found that the Great Red Spot's roots go 50 to 100 times deeper than Earth's oceans and are warmer at the base than they are at the top," said Andy Ingersoll, professor of planetary science at Caltech and a Juno co-investigator. "Winds are associated with differences in temperature, and the warmth of the spot's base explains the ferocious winds we see at the top of the atmosphere."


Quote:
Juno also has detected a new radiation zone, just above the gas giant's atmosphere, near the equator. The zone includes energetic hydrogen, oxygen and sulfur ions moving at almost light speed.

The new zone was identified by the Jupiter Energetic Particle Detector Instrument (JEDI) investigation. The particles are believed to be derived from energetic neutral atoms (fast-moving ions with no electric charge) created in the gas around the Jupiter moons Io and Europa. The neutral atoms then become ions as their electrons are stripped away by interaction with the upper atmosphere of Jupiter.

Juno also found signatures of a high-energy heavy ion population within the inner edges of Jupiter's relativistic electron radiation belt -- a region dominated by electrons moving close to the speed of light. The signatures are observed during Juno's high-latitude encounters with the electron belt, in regions never explored by prior spacecraft. The origin and exact species of these particles is not yet understood. Juno's Stellar Reference Unit (SRU-1) star camera detects the signatures of this population as extremely high noise signatures in images collected by the mission's radiation monitoring investigation.
To date, Juno has completed eight science passes over Jupiter. Juno's ninth science pass will be on Dec. 16.
Nicholas Kang is offline   Reply With Quote
Old 03-08-2018, 12:45 AM   #191
Unstung
Cassini 2017
 
Unstung's Avatar
Default

JPL: "NASA Juno finds Jupiter's Jet-Streams Are Unearthly"
Unstung is offline   Reply With Quote
Old 03-13-2018, 10:49 PM   #192
Nicholas Kang
Spaceflight News Reporter
 
Nicholas Kang's Avatar

Default

Jupiter's Great Red Spot Getting Taller as it Shrinks, NASA Team Finds



A new study suggests that it hasn’t all been downhill, though. The storm seems to have increased in area at least once along the way, and it’s growing taller as it gets smaller.

“Storms are dynamic, and that’s what we see with the Great Red Spot. It’s constantly changing in size and shape, and its winds shift, as well,” said Amy Simon, an expert in planetary atmospheres at NASA’s Goddard Space Flight Center in Greenbelt, Maryland, and lead author of the new paper, published in the Astronomical Journal.

The new findings indicate that the Great Red Spot recently started to drift westward faster than before. The storm always stays at the same latitude, held there by jet streams to the north and south, but it circles the globe in the opposite direction relative to the planet’s eastward rotation. Historically, it’s been assumed that this drift is more or less constant, but in recent observations, the team found the spot is zooming along much faster.

The study confirms that the storm has been decreasing in length overall since 1878 and is big enough to accommodate just over one Earth at this point. But the historical record indicates the area of the spot grew temporarily in the 1920s.

“There is evidence in the archived observations that the Great Red Spot has grown and shrunk over time,” said co-author Reta Beebe, an emeritus professor at New Mexico State University in Las Cruces. “However, the storm is quite small now, and it’s been a long time since it last grew.”

Because the storm has been contracting, the researchers expected to find the already-powerful internal winds becoming even stronger, like an ice skater who spins faster as she pulls in her arms.

Instead of spinning faster, the storm appears to be forced to stretch up. It’s almost like clay being shaped on a potter’s wheel. As the wheel spins, an artist can transform a short, round lump into a tall, thin vase by pushing inward with his hands. The smaller he makes the base, the taller the vessel will grow.

In the case of the Great Red Spot, the change in height is small relative to the area that the storm covers, but it’s still noticeable.


The Great Red Spot’s color has been deepening, too, becoming intensely orange since 2014. Researchers aren’t sure why that’s happening, but it’s possible that the chemicals which color the storm are being carried higher into the atmosphere as the spot stretches up. At higher altitudes, the chemicals would be subjected to more UV radiation and would take on a deeper color.

In some ways, the mystery of the Great Red Spot only seems to deepen as the iconic storm contracts. Researchers don’t know whether the spot will shrink a bit more and then stabilize, or break apart completely.

“If the trends we see in the Great Red Spot continue, the next five to 10 years could be very interesting from a dynamical point of view,” said Goddard co-author Rick Cosentino. “We could see rapid changes in the storm’s physical appearance and behavior, and maybe the red spot will end up being not so great after all.”

Reference:

Link to article in Astronomical Journal.
Nicholas Kang is offline   Reply With Quote
Thanked by:
Old 03-13-2018, 11:45 PM   #193
boogabooga
Bug Crusher
 
boogabooga's Avatar
Default

I'll be devastated if the G.R.S. disappears...
boogabooga is offline   Reply With Quote
Thanked by:
Old 03-13-2018, 11:47 PM   #194
Notebook
Donator
 
Notebook's Avatar


Default

I think their is a lesser GRS, the Great Red Pimple?

N.
Notebook is online now   Reply With Quote
Old 03-14-2018, 04:16 AM   #195
Andy44
owner: Oil Creek Astronautix
 
Andy44's Avatar
Default

Quote:
Originally Posted by boogabooga View Post
 I'll be devastated if the G.R.S. disappears...
Rather you should be happy, you are among a small set of humans who get to witness Jupiter with and without the GRS is this happens.
Andy44 is offline   Reply With Quote
Thanked by:
Reply

  Orbiter-Forum > Far Side of the Moon > Spaceflight News


Thread Tools

Posting Rules
BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
Forum Jump


All times are GMT. The time now is 03:41 PM.

Quick Links Need Help?


About Us | Rules & Guidelines | TOS Policy | Privacy Policy

Orbiter-Forum is hosted at Orbithangar.com
Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Copyright ©2007 - 2017, Orbiter-Forum.com. All rights reserved.