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Holger Isenberg @areoinfo.bsky.social · 16h

Just UV light and magnets below, even with the dust not being magnetic, was sufficient! The light creates unexpected large negative charge and magnetic fields produce the shape. Demonstrated in this 15 minute video from the 2017 Exploration Science Forum at NASA Ames: youtu.be/KULnd8TUxjI

NASA Exploration Science Forum 2017 - Day 3 (Main Room) - Mihaly Horanyi

YouTube video by Solar System Exploration Research Virtual Institute

youtu.be

Holger Isenberg @areoinfo.bsky.social · 16h

Dunes on Comet 67P and albedo pattern swirls at magnetic anomalies on the Moon, like Reiner Gamma the planned landing site of @intuitivemachines.bsky.social IM-3 mission, were produced in laboratory experiments by Prof. Mihaly Horányi and team. (video link next in thread)

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Holger Isenberg @areoinfo.bsky.social · 18h

Here different calibration, also available in HDR on areo.info/mars20/ecams... (here on Bsky it's not shown in HDR)

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Holger Isenberg @areoinfo.bsky.social · 19h

Jezero Crater, home of NASA / JPL Perseverance Rover, as seen by China's Tianwen-1 Mars orbiter's Moderate Resolution Imaging Camera (MoRIC). It's the 50km diameter crater in the image center.

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Holger Isenberg @areoinfo.bsky.social · 19h

Gale Crater, home of Curiosity Rover, as seen by China's Tianwen-1 Mars orbiter's Moderate Resolution Imaging Camera (MoRIC).

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Holger Isenberg @areoinfo.bsky.social · 19h

Only 67 days to go to the great 250th!
Top 10 still existing king-free countries:

San Marino (301 CE)
Iceland (930 CE)
Switzerland (1291 CE)
United States (1776 CE)
Haiti (1804 CE)
Liberia (1847 CE)
Dominican Republic (1844 CE)
El Salvador (1841 CE)
Costa Rica (1848 CE)
Guatemala (1839 CE)

Holger Isenberg @areoinfo.bsky.social · 2d

Videos from last week's @themarssociety.bsky.social Mars Society Convention at @usc.edu are now published. Robert Zubrin can be heard fighting against the NASA budget cuts in the speech below: "Science is the fruit of Freedom" youtu.be/gs_cqKdqRRM?...

2025 Mars Society Conference - Day One - Robert Zubrin

YouTube video by The Mars Society

youtu.be

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Holger Isenberg @areoinfo.bsky.social · 7d

Same-shaped rock in like a hand-axe, there even at the typical size of those, with conchoidal fractures was seen directly at the Mars Insight Lander location: www.jpl.nasa.gov/edu/resource...

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Holger Isenberg @areoinfo.bsky.social · 7d

The first black wedge-shaped rock with its concave conchoidal fractures on the surface looks like a hand axe! en.wikipedia.org/wiki/Hand_axe

Hand axe - Wikipedia

en.wikipedia.org

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Holger Isenberg @areoinfo.bsky.social · 7d

... is not reacting to the rapid changes in the space-faring technology happening the recent years. They could consider to make their probes fit into the Falcon 9 which launches 3 times a week now and is able to bring small probes into Mars transfer trajectory. www.lpi.usra.edu/mepag/

MEPAG is responsible for providing the science input needed to plan and prioritize Mars exploration activities and serves as a community-based, interdisciplinary forum for inquiry and analysis in supp...

www.lpi.usra.edu

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Holger Isenberg @areoinfo.bsky.social · 7d

Currently at @themarssociety.bsky.social
convention at USC: Mars Society President Robert Zubrin pointing out towards NASA Mars Exploration Program Analysis Group Chair Victoria Hamilton how their program contains many fixed ideas about what could be found in Mars and ...

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Holger Isenberg @areoinfo.bsky.social · 7d

... part of the on-board wet chemistry lab on Mars Curiosity Rover (not on Perseverance) and no information is available how many have already been used since 2012. 📷 www.science.org/content/arti...

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Holger Isenberg @areoinfo.bsky.social · 7d

... how the Mars rover's on board chemistry lab could be re-utilized for investigating further the unexpectedly found organic chemistry substances like fatty acids (long hydrocarbon chains) which hint to extend life on Mars. I'm wondering about the status of the 9 wet chemistry cups which are …

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Holger Isenberg @areoinfo.bsky.social · 7d

A few minutes ago at @themarssociety.bsky.social convention: Curiosity Rover Deputy Project Scientist for Project Scientist Ashwin Vasavada hearing Steven Benner's (renowned biochemist en.wikipedia.org/wiki/Steven_...) and Robert Zubrin's (Mars Society President) questions about …

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Holger Isenberg @areoinfo.bsky.social · 8d

Edwin Kite, Associate Prof. at UChicago and at the astera.org Institute, followed today about localized surface-heat reflecting shields created by engineered micrometer-sized particles to warm up the surface, i.e. acting similar to the water droplets in clouds.

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Holger Isenberg @areoinfo.bsky.social · 8d

Hoppy Price from JPL later in the morning: The Mars Sample Return is not only blocked by the funding discussion, but also by NEPA (National Environmental Policy Act of 1969) www.nasa.gov/nepa-mars-sa... Good news: JPL has funding for developing alternatives to Plutonium as source for RTGs.

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Holger Isenberg @areoinfo.bsky.social · 8d

With Robert Zubrin's talk yesterday the International Mars Society Convention has begun at USC in Los Angeles! Program for today and Saturday on marssociety.org

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Holger Isenberg @areoinfo.bsky.social · 14d

Another try to capture 3I/Atlas was scheduled with the Navcam on Perseverance Mars Rover a few hours ago. The bright spot on the left is the moon Phobos with -6.5 magnitude. 2025-10-04 06:13:44 UTC. The exact UTC time when images were taken is shown below each image on areo.info/mars20/ecams... .

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Holger Isenberg @areoinfo.bsky.social · 19d

Experiment: UV light moves sand magnitudes farther than previous assumptions allow. Albedo differences like Reiner Gamma are still actively sustained. Relates to the lunar dust detector LDEX on LADEE. "The dust environment of airless planetary bodies", Horányi, Szalay, Wang.
📷 youtu.be/c9baLqhjNAw

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Holger Isenberg @areoinfo.bsky.social · 21d

Water clouds (liquid or ice) yesterday on Mars. Clear skies 5 days earlier. The panorama shows haze on the horizon and a bonus dust devil. On areo.info/mars20/ecams... in HDR or with the areoHDR app, more clouds are visible in other images from that day which are overexposed white in non-HDR.

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Reposted by Holger Isenberg

The Mars Society @themarssociety.bsky.social · Sep 11

Program itinerary released! Don’t miss the 2025 Mars Society Convention Oct 9–11 at USC. Big names. Big ideas. Big step toward Mars. Visit marssociety.org for full details, including how to register. #spaceadvocacy #humanstomars #marsexploration #mars2025

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Holger Isenberg @areoinfo.bsky.social · 26d

New images a day later now from the same weird rock on Mars as seen on mission day 1630 yesterday. This time treated with the 5cm diameter rock abrasion tool. More: areo.info/mars20/ecams...

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Holger Isenberg @areoinfo.bsky.social · 27d

Perseverance Rover reached a location on Mars which rises rock weirdness to a new level! Pattern like roots or splattered liquid glass and patches imitating lichens. The red material didn't move during brush cleaning by the robot. More from the same day Sep 20, 2025 on areo.info/mars20/ecams...

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Holger Isenberg @areoinfo.bsky.social · Sep 14

Dark shadow over Perseverance Rover on mission day 1622, Sep 11, 2025 US timezones. Both images are from the same day viewing west outside Jezero Crater shortly after sun rise and at noon. More images and better in HDR: areo.info/mars20/ecams...
Image times: 2025-09-12 00:18:55 UTC & 08:10:12 UTC

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Holger Isenberg @areoinfo.bsky.social · Sep 12

No geologists here who wondered?