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FastFourierTransform
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Science and Astronomy Videos

16 May 2018 04:10

I loved this video where comet 67P Churyumov-Gerasimenko and its dust trailes are tracked for a century.



In 1959 67P changed orbit after a very close ecnounter with Jupiter. Numerical simulations show a close aproach distance between 0.040 and 0.020 AU (depending if you are considering or not deviations due to the push performed by cometary jets). Considering that Callisto orbits Jupiter at 0.012AU this had to be an epic vista.

The video shows a model of dust ejection by the comet where each perihelion pass is colored with different colors. As time goes on, the dust of the comet get's caotically distributed around the orbit and the inner planets start to generate a complex cloud.

As you can see, Mars is going to have new amazing meteor showers produced by Rosetta's comet the next decades.

After the encounter 67P acquiered its current orbit (September this year it's going to change again a little by anothe Jupiter encounter)

I leave you with this awesome timelapse taken by Rosetta. Each frame is a long-exposure image taken of the neck of the comet (when it was in shadows). You can see the neck because daylight bounces in different parts of the comet making a pale reflection on this region. In the background you can see the stars (even a globular cluster shows up). And in the front you are watching dust grains as they pass in front of the camera.

Image
 
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DoctorOfSpace
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16 May 2018 14:42

CPU: Intel Core i7-5820K 4.2GHz 6-Core Processor - RAM: G.Skill Ripjaws V Series 32GB (4 x 8GB) DDR4-2400 - GPU: EVGA GeForce GTX 1080 Ti SC Black Edition
Quando omni flunkus, moritati
 
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midtskogen
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21 May 2018 03:58

Popular science of 1957 (the first 17 minutes can be skipped).
NIL DIFFICILE VOLENTI
 
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midtskogen
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02 Jun 2018 11:16

NIL DIFFICILE VOLENTI

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