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Pluto System- NH Scientific Results
Marcin600
post Aug 21 2022, 07:52 AM
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For those who missed it (like me smile.gif ) - two (open) articles on the origin of the red polar cap on Charon (July 5, 2022):
http://pluto.jhuapl.edu/News-Center/News-A...p?page=20220705
https://agupubs.onlinelibrary.wiley.com/doi...29/2021GL097580
https://agupubs.onlinelibrary.wiley.com/doi...29/2021GL097580 - pdf
https://www.science.org/doi/10.1126/sciadv.abq5701
https://www.science.org/doi/pdf/10.1126/sciadv.abq5701 - pdf
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Marcin600
post Aug 27 2022, 08:15 PM
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The PI’s Perspective: Extending Exploration and Making Distant Discoveries, August 23, 2022:
http://pluto.jhuapl.edu/News-Center/PI-Per...tive_08_23_2022

quote: "...we’ll be searching for new KBOs to study, or even to fly by if we can reach a target with our remaining fuel supply of about 11 kilograms (24 pounds). Those searches are continuing on two of the world’s largest telescopes – the Japanese Subaru telescope in Hawaii and the U.S. Gemini South telescope in Chile – and have collected exquisite data that our team is analyzing. The searches have been enhanced by some new machine learning data analysis tools, developed last year and refined this year, that increase the KBO detection rates considerably over what human scouring of the data has yielded in the past. Further boosting the Subaru effort is a more efficient sky filter that we provided for the telescope and will be pressed into service next year..."
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Explorer1
post Sep 1 2022, 07:58 PM
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Great update as usual. I am wondering, though from this:
QUOTE
Transmitting the remaining data from the Arrokoth encounter back to Earth


What remains on board to still be transmitted, if it was obviously not of high priority to receive before?


Has it also been ruled out to look back at the (inner) solar system, as Voyager 1 once did so memorably? The Sun is still too bright even now to risk LORRI, is data transmission the bottleneck, or is there some other reason (would Earth even be visible at all?) to not update the classic Pale Blue Dot image?
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scalbers
post Sep 1 2022, 09:00 PM
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Maybe a Pale Blue Dot image can be risked at the very end of the mission as mentioned at the end of this reporter's story.


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dtolman
post Mar 15 2023, 11:14 AM
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The website centauri-dreams.org has an excellent summation of the presentations concerning New Horizons at the 54th Lunar and Planetary Science Conference on March 14th, if anyone is interested. Covers the formation of Arrokoth, bladed terrain on Pluto's farside, and the search for KBOs that the spacecraft can observe.
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Explorer1
post Mar 16 2023, 10:17 PM
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How much of the remaining fuel could be allotted to make an intercept of a second KBO? I know the earlier a manouvre is made, the less delta-v is needed, but there must always be some leftover for the further extended mission (and data transmission of course). Is there any estimate of the percentage available for maneuvering, or could there be some situation where it would be better to 'stay the course' and not do a flyby?
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Alan Stern
post Mar 17 2023, 11:53 AM
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QUOTE (Explorer1 @ Mar 16 2023, 10:17 PM) *
How much of the remaining fuel could be allotted to make an intercept of a second KBO? I know the earlier a manouvre is made, the less delta-v is needed, but there must always be some leftover for the further extended mission (and data transmission of course). Is there any estimate of the percentage available for maneuvering, or could there be some situation where it would be better to 'stay the course' and not do a flyby?



We have about 30 m/sec to devote to this if the maneuver is made this year. After that the number declines as we spend fuel to do other science.

-Alan
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kenny
post Nov 30 2023, 09:19 PM
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I don't recall ever seeing this amazing close-up of Pluto's moon Nix before...

"Pluto's approximately 50-km wide moon Nix was imaged by NASA's New Horizons spacecraft on July 14, 2015. The red area is likely a region of tholin deposition and/or formation. Tholins are abiotic complex organic solids possibly produced when ultraviolet light from the faraway Sun breaks down molecules of methane that escape Pluto."

Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute/J. Major


Photo of Nix


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Antdoghalo
post Dec 1 2023, 01:08 AM
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That photo has been around for a while. It's just less color saturated than most versions.


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