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Nov 14 2014 01:55pm
Quote (card_sultan @ Nov 14 2014 12:59pm)
both of those links only talk about what an asteroid is and not how they originated.

Ive heard the big bang theory talked about when pondering the origin of planets:

explosion + particle attraction x 10000000000000000000000 = -----> Nice roundish planet.


allow me to paraphrase :

A (ok i get it) + B (sounds logical) = Z (holy crap thats a giant leap)

thats a pretty substantial conclusion.

Like why are the planets so roundish , why are they essential on the same flat plane? Why do they all orbit the sun in the same direction? Planets are round because gravity pulls at every direction equally, they orbit the equator of the sun, The sun spins one way so the planets orbit in the same direction

Are asteroids the result of the Big Bang or a collision? Asteroids are probably a mix of something exploding and collisions, a planet sized object hits another planet sized object, matter is ejected into space at a high rate of speed, asteroids are created

If they were from a collision  - couldn't we use a supercomputer to essentially see if they fit together  by backwards engineering the trillion piece jigsaw puzzle? With how big the universe is, and the speed everything moves at along with the 14 or so billion year span the event that created the asteroids could have happened, the computer would probably explode trying to figure it out as even weak gravities from "nearby" stars and black holes could alter the pathing by even the smallest of degrees, thus sending it on an entirely different path

(that is essentially the way we figured out Global Tectonics because one person noticed the western coast of Africa fit the eastern coast of South America like a glove)

So many questions, so little time.





Really - who told you that?


I tried to give some answers based on what I think
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Nov 15 2014 02:17am
Quote (Asexual @ Nov 14 2014 01:55pm)
I tried to give some answers based on what I think


The only one that is wrong is why planets all go the same direction. It has to do with the total momentum of everything orbiting the sun. As things collide and stick they approach the total average momentum. If you randomly sample objects they will more or less average out to the same direction, so as random particles form planets they go the same direction.
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Nov 15 2014 07:21am
unfortunately philae hit a snag and is currently not able to refill it's batteries -> http://www.abc.net.au/news/2014-11-15/space-mission-halted-as-comet-probe-goes-into-standby-mode/5894176

the title is misleading, while philae has stopped working for the moment rosetta is still very much active
and the light in this dark story:

Astronomer Jonathan McDowell, from the Harvard-Smithsonian Center for Astrophysics, said the data already received is invaluable.
"The great thing is that in the last couple of hours of Philae's having energy, they downloaded an enormous amount of stuff that's going to keep the scientists busy for months and probably years," Dr McDowell said.
"And I'm not giving up on Philae yet. I hope that at some [point] it gets a little more sunlight and it's going to wake up and surprise us all by coming back to life."
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Nov 15 2014 08:14am
Quote (Thor123422 @ Nov 15 2014 04:17am)
The only one that is wrong is why planets all go the same direction.  It has to do with the total momentum of everything orbiting the sun.  As things collide and stick they approach the total average momentum.  If you randomly sample objects they will more or less average out to the same direction, so as random particles form planets they go the same direction.


Ahh ok
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Nov 15 2014 05:44pm
it's odd to see all those gloomy write-ups, like http://www.independent.co.uk/news/science/rosetta-mission-philae-probe-may-revive-as-comet-travels-nearer-to-sun-9862988.html
when philae was and is just a hoped for bonus within the mission, which didn't do badly at all http://news.yahoo.com/european-probe-plants-thermometer-comet-090840001.html
can't wait to see and hear what the result are coming from the philae instruments
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Nov 17 2014 12:05am
detective work has resulted in finding where philae hit the surface of the comet first -> http://www.abc.net.au/news/2014-11-17/images-show-philaes-historic-comet-bounce/5895924
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Nov 17 2014 12:12am
Quote (brmv @ Nov 15 2014 06:44pm)
it's odd to see all those gloomy write-ups, like http://www.independent.co.uk/news/science/rosetta-mission-philae-probe-may-revive-as-comet-travels-nearer-to-sun-9862988.html
when philae was and is just a hoped for bonus within the mission, which didn't do badly at all http://news.yahoo.com/european-probe-plants-thermometer-comet-090840001.html
can't wait to see and hear what the result are coming from the philae instruments


"However, scientists were quick to expound the overall success of the mission lander after 57 hours - out of an anticipated 64 hours of battery - on Comet 67P/Churyumov-Gerasimenko, 311 miles away from earth."

lol what? from the first article.
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Nov 17 2014 08:20am
OSIRIS spots Philae drifting across the comet




These incredible images show the breathtaking journey of Rosetta’s Philae lander as it approached and then rebounded from its first touchdown on Comet 67P/Churyumov–Gerasimenko on 12 November 2014.
The mosaic comprises a series of images captured by Rosetta’s OSIRIS camera over a 30 minute period spanning the first touchdown. The time of each of image is marked on the corresponding insets and is in GMT. A comparison of the touchdown area shortly before and after first contact with the surface is also provided.
The images were taken with Rosetta’s OSIRIS narrow-angle camera when the spacecraft was 17.5 km from the comet centre, or roughly 15.5 km from the surface. They have a resolution of 28 cm/pixel and the enlarged insets are 17 x 17 m.
From left to right, the images show Philae descending towards and across the comet before touchdown. The image taken after touchdown, at 15:43 GMT, confirms that the lander was moving east, as first suggested by the data returned by the CONSERT experiment, and at a speed of about 0.5 m/s.
The final location of Philae is still not known, but after touching down and bouncing again at 17:25 GMT, it reached there at 17:32 GMT. The imaging team is confident that combining the CONSERT ranging data with OSIRIS and navcam images from the orbiter and images from near the surface and on it from Philae’s ROLIS and CIVA cameras will soon reveal the lander’s whereabouts.
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Nov 17 2014 01:20pm
Pretty cool read man, thanks for posting.
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Nov 17 2014 10:03pm
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