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DART Mission

Posted: Mon Sep 26, 2022 9:15 pm
by Aardwolf
Do we have any predictions for this experiment? I couldn't find any on the forum.

https://science.nasa.gov/science-news/b ... ction-rest

As they always estimate low density for asteroids I predict the effect to be smaller than expected (10 min change to the binary orbit apparently). Also, I suspect if any changes are detected (dubious) they will eventually return to their original orbit parameters.

Re: DART Mission

Posted: Tue Sep 27, 2022 8:14 pm
by allynh
The article that GaryN posted makes me wonder what will happen.

See DART’s final images before it smashed into an asteroid
https://www.planetary.org/articles/nasa ... roid-crash

The picture looks like Bennu of the OSIRIS-REx mission, which was just a loose collection of material.

https://www.planetary.org/space-images/ ... ore-impact
DIMORPHOS FILLS THE SCREEN JUST BEFORE IMPACT What started out as a tiny gray dot became much larger in the DRACO camera's view. NASA/Johns Hopkins APL

There are no obvious craters or fixed shapes.

Odds are it is like Bennu and will splash rather than make a "crater." Which means whatever kinetic energy DART had will be lost on impact, not changing the orbit at all.

Re: DART Mission

Posted: Tue Sep 27, 2022 11:03 pm
by Aardwolf
allynh wrote: Tue Sep 27, 2022 8:14 pmThe picture looks like Bennu of the OSIRIS-REx mission, which was just a loose collection of material.
There may be loose material on the surface but I'm sure it's as solid as every other asteroid. No evidence it's all loose material, just wishful thinking from the mainstream due to the ridiculously low density calculation.

Re: DART Mission

Posted: Wed Sep 28, 2022 6:05 am
by allynh
NASA crashes spacecraft into asteroid in attempt to knock it off course
https://www.youtube.com/watch?v=RoAR3I7Fvcg

The system they want to build would use an infrared telescope.

The impact video starts around 1:13:00

WATCH LIVE: NASA's DART spacecraft crashes into an asteroid to test defense system
https://www.youtube.com/watch?v=HLy0bBO5efk

Re: DART Mission

Posted: Wed Sep 28, 2022 6:42 am
by Cargo
I bet 100 fracks that the Asteroid could care less about the DART impact. I also found it curious that the final frame of before impact looked like a spot that had already been hit. Very odd..

https://planetary.s3.amazonaws.com/web/ ... w.jpg.webp

Re: DART Mission

Posted: Wed Sep 28, 2022 5:55 pm
by lmurarka
From:https://spaceweather.com/

"ASTEROID DIMORPHOS NOW HAS A TAIL: Two days ago, NASA's DART spacecraft slammed into asteroid Dimorphos at 14,000 mph. The dramatic impact expelled a cloud of dust and turned the asteroid into a type of comet. "Dimorphos now has a tail," reports Ernesto Guido who photographed the structure during the early hours of Sept. 28th:

"This shows the asteroid about 29 hours after impact," says Guido, who used a remotely-controlled 0.61-m telescope in El Sauce, Chile. "It developed a beautiful narrow tail 80 arcseconds long."

NASA was surprised by the easy visibility of DART's impact from Earth. The tail gives observers one more thing to monitor as astronomers look for changes to the asteroid's orbit. Even a slight shift would prove that human tech can alter an asteroid's trajectory--a possible strategy for future Planetary Defense. Stay tuned!"

https://spaceweather.com/images2022/28s ... _strip.jpg
https://spaceweathergallery.com/full_im ... 373499.png

Re: DART Mission

Posted: Wed Sep 28, 2022 10:07 pm
by allynh
Apparently there was a flash of light on impact. That indicates electrical discharge.

BREAKING! First LICIACube images of the DARTMission impact
https://www.youtube.com/watch?v=LzRPfNi4fTI

Re: DART Mission...Dr. Phil sees the light...sort of

Posted: Wed Sep 28, 2022 11:37 pm
by Doncville
So Dr. Phil seems really surprised and perplexed. Well, well, well....what do we have here?....Someone with credentials needs to call doctor Phil and give him your educated guess. I wonder if he would listen? I'm just a hick living in the armpit of Texas...i'm sure he wouldnt listen to me. :|

https://twitter.com/DrPhiltill/status/1 ... 4598695940

Re: DART Mission

Posted: Thu Sep 29, 2022 8:14 pm
by lmurarka
Definitely some kind of electrical phenomenon going on.

Any explanations or insights from the Thunderbolts team?

From https://spaceweather.com/

"HUBBLE IMAGES OF ASTEROID IMPACT: When NASA's DART spacecraft slammed into asteroid Dimorphos on Sept. 26th, almost every telescope in the Solar System was watching. Here is what Hubble saw:

In these visible-light images, the asteroid tripled in brightness after DART struck. The glow remained steady for more than eight hours after impact. Some of the rays of ejecta appear to be curved, but astronomers need to take a closer look to confirm that the curvature is real and, if so, what it could mean.

Hubble plans to monitor the Didymos-Dimorphos binary system 10 more times over the next three weeks. These regular, relatively long-term observations as the ejecta cloud expands and fades will paint a more complete picture of DART's aftermath.

Oh, Webb saw it too. "

https://www.nasa.gov/feature/goddard/20 ... art-impact
https://spaceweather.com/images2022/29s ... ledart.gif

Re: DART Mission

Posted: Thu Sep 29, 2022 10:17 pm
by Maol
Why could not the 'flash' be reflected sunlight? The scattered ejecta is undoubtedly crystalline grains of various minerals, as found on the Moon and in nearly all similar solar system objects, and are very likely prismatic, so would reflect light.

DART Mission

Posted: Fri Sep 30, 2022 2:22 am
by Brigit
I just love the Blair Witch Project camera effects on that.

Re: DART Mission

Posted: Fri Sep 30, 2022 2:38 am
by jacmac
I would guess an electric discharge would not last 8 hours.
And as Moal says:
Why could not the 'flash' be reflected sunlight? The scattered ejecta is undoubtedly crystalline grains of various minerals, as found on the Moon and in nearly all similar solar system objects, and are very likely prismatic, so would reflect light.
Surly the DART spacecraft itself would be in many pieces with surfaces available for sunlight reflection; adding to ejecta from the asteroid.
Also, there might be some remaining fuel used to alter the course of the spacecraft before impact; might this become ignited and undergo a slow
"burn" of some kind as it interacts with whatever is there. ???

Re: DART Mission

Posted: Fri Sep 30, 2022 6:44 pm
by allynh
This is scary.

We have randomly come across two piles of "gravel" in the various contacts with asteroids. Bennu and now Dimorphos. That means a good fraction of what we think are solid bodies are actually piles of "gravel". Yikes!

This is evidence of Electrical Discharge Machining(EDM) off of planetary surfaces that then aggregate in time into piles of "gravel".

- You can't form rock unless it's part of the crust of a planet.

Until we get geologists out into space, looking at rock and "gravel", the answer will be unsettled because too many "theories" will be invented rather than actual observation. Only when we can examine the actual rock can we determine what planet they came from.

- The flash and then glow is no different than when Comet Holmes expanded out bigger than the Sun.

The kinetic energy from the hit spread out the pile of "gravel" and it is now entered into the same glow mode of any comet, simply tighter than normal. That's why the spread of "gravel" is not random, the electrical field is keeping it in confined streams.

Re: DART Mission

Posted: Tue Nov 01, 2022 12:41 pm
by Aardwolf
I have been trying to gather some information regarding Dimorphus's tail as all the pictures show it is as a straight line which is curious. Dimorphos orbits Didymos so I assumed there would be a spiraling effect. Apparently the tail is actually from the Didymos-Dimorphus system, according to the link below, so all the reports & pictures referring to Dimorphus actually refer to both.

https://esahubble.org/images/opo22056a/

It could be that the tail is emanating from Didymos even though it hit Dimorphus. Hilarious if true and obviously much more supportive of this being an electromagnetic phenomenon rather than "dust". However, they are already trying to rewrite history as the link stated "DART impacted the Didymos-Dimorphos system...". No it didn't, it impacted the tiny rock (1% of Didymos) orbiting it so why is Didymos suddenly ejecting material!

Re: DART Mission

Posted: Thu Jan 05, 2023 10:04 pm
by Open Mind
still no video analysis on Dart? Can't find any EU vids on it. If any, would love a link.