Charles Link's latest activity

I happened to hear about this video when listening to a video on a completely different topic. It was warmly recommended by a youtuber I...

He mentions about ten minutes into the video in post 88 about the bright ring around the lower part of the earth, and he didn't seem to...

To comment further on the above post 84: The approximate formula I have for ## v ##, (it neglects any effect from the moon), integrates...

I used the term "slingshot" in a generic way. "gravity assist" would be a better term perhaps. Probably not too surprising as the...

According to [1], Luna 3 (1959), Pioneer 10 (1973), Pioneer 11 (1974), and Mariner 10 (1974) all preceded Voyager 1 and 2 (1979) in...

That is basically what I did, and this one did not turn out to be of the slingshot variety. Instead, in going back and forth between...

Some analysis of the Artemis pictures The second part (starting 6:10) takes multiple versions of the Earth eclipse images to make an...

Dave Mason, co-founder of Traffic known for ‘We Just Disagree’ and ‘Feelin’ Alright,’ dies at 79...

In post 73 I mentioned something that took me a while to figure out, and it wasn't at all obvious to me: The conservation of energies...

It may be worth mentioning, to add to my post 78 above, (the theory is all spelled out in the Kleppner and Kolenkow text), the...

Over 10000 pictures taken during the mission

To comment more on my post 74 above, I dug out my Kleppner and Kolenkow mechanics textbook from college, and the path neglecting the...

I'd also like to comment on the first photo of post 66. I think what looks like the moon's shadow is simply the earth illuminated by...

The calculation with the moon's gravitational potential does indeed work in the rest frame of the moon. To compute it, we can to a good...

In regards to posts 60 and posts 63 above, I did a calculation assuming the total energy of the rocket stays constant using the...