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SpaceX

Posted: 15 Feb 2018 22:46
by HarbingerDawn
midtskogen wrote:
Source of the post Cool. What was the sound like?

Thanks for reminding me. Here's a link to the audio recordings I made: https://www.reddit.com/r/spacex/comment ... d/dtvv1c4/

Make sure you are using audio equipment that can reproduce low frequencies very well, and play it fairly loud for the full effect.

SpaceX

Posted: 15 Feb 2018 23:48
by midtskogen
My headphones did no justice to that clip. :/

I ran the video below on my TV with my earthquake subwoofer.  It was quite nice (but things in my living room start to rattle so much, so I had to keep it down somewhat).  If I get a chance to see a launch, I think I would mainly be there for the sound.


SpaceX

Posted: 16 Feb 2018 06:38
by Hornblower
Yeah, I think Falcon Heavy has a cooler sound than the Space Shuttle. I'd be there just to hear it too.

SpaceX

Posted: 22 Feb 2018 14:07
by midtskogen
People all over northern Norway reported a strange light this evening.  Apparently it was the launch of Falcon 9.  A couple of our meteor cameras recorded it.  I'll make a video.

EDIT: The video:

SpaceX

Posted: 22 Feb 2018 16:01
by Hornblower
midtskogen, how's the internet service? The password is supposedly "martians"

SpaceX

Posted: 23 Feb 2018 12:38
by midtskogen
Using this footage as well as similar footage from Finland, the velocity comes out as 7.8 km/s and the height around 530 km.

SpaceX

Posted: 10 Mar 2018 18:08
by Hornblower
New SpaceX video of the Falcon Heavy launch. Includes footage of the core crashing into the ocean near the drone ship!

SpaceX

Posted: 24 Apr 2018 22:15
by midtskogen

SpaceX

Posted: 25 Apr 2018 03:16
by Watsisname
Thanks for sharing that!  Very interesting.  I guess the main takeaway is that for the next couple centuries it is most likely still orbiting between Earth and Mars, but for the more distant future the increased probability of encounters makes the possibility space expand through the whole solar system.

I most like the tiny chance that it could be ejected from the solar system and become interstellar. :P

SpaceX

Posted: 25 Apr 2018 05:28
by midtskogen
Yeah, the possibility for a hyperbolic trajectory was surprising.  I wonder if it's really roughly a 1/1000 chance in 200 years, or simply a freak artefact of the simulation.  This is sort of related to something we see in meteor observations, since typical meteors, like the Tesla, are inner solar system objects in an orbit with Earth encounters.  Very occasionally, orbit calculations give an eccentricity > 1 (and are difficult to explain with inaccurate observations).  The question then is, especially when the orbit is barely hyperbolic, is whether it's an interstellar meteor, or a local object that has been slingshot gravitationally.  One could think that if such hyperbolas form frequently, the solar system would have emptied itself of dust and meteoroids long ago.  But on the other hand, the solar system was formed with an extremely high number of small objects.

SpaceX

Posted: 03 Nov 2019 23:07
by midtskogen
An interesting read about Starlink.

SpaceX

Posted: 04 Nov 2019 09:30
by A-L-E-X
I wonder how long before we develop Spacenet!