[NNagain] Hurling rocks into Earth's gravity well

[le berger des photons]

you seem dazed and confused enough to be president.

On Mon, Mar 17, 2025 at 1:41 PM Douglas Goncz A.A.S. M.E.T. 1990 via
Nnagain <nnagain at lists.bufferbloat.net> wrote:

> Hello Dr. David.
>
>
> The gravity at the surface of the Moon is larger than might be expected
> since the volume to radius ratio is as r squared, so that with a difference
> of 100 times that is a factor of 100x in gravity at surface we can predict
> that the rocks they'll be throwing at us we'll be falling up that is thrown
> out of the gravity wall for 1/10 the trip roughly and falling down that is
> falling into that gravity well for 9/10 of the trip causing an overall
> Factor of enormous acceleration. Offhand I would say the process would
> achieve 80% of escape velocity.
>
> The Australian science agency has a nice chart out for asteroid type
> objects on their website. It summarizes the relationship between the many
> many small rocks which are in our system and the very few large rocks which
> accompany them as they move at various speeds knowing only statistical
> information about how many rocks of which size and how fast they're moving
> and what energy the net result is
>
> They quote figures of atta joules. So once given the upward that is
> towards the Earth impetus a mere Boulder could do really significant damage
> assuming that the transit time could be controlled carefully in their was
> either accurate aiming or some type of midcourse correction to get the
> target secured.
>
> Trying to find my way back on topic to Net neutrality. Maybe a moon base
> could be set up with a transmitter powered by a small nuclear reactor
> receiving signals from Earth and retransmitting them to make the
> connections for data and voice. Compared to lofting a satellite having the
> time to construct such an item on the surface of the Moon would be
> advantageous the way it seems to me. I'm pretty sure that a satellite would
> have to be put into place in orbit with its power supply and all that and
> that's what starling does bloody bloody blah.
>
> By the way I'm running for president.
> / / < GONCZ2028 > /
>
>
> Cheers
> Doug
>
>
>
>
>>
>> On Mon, Oct 7, 2024, 10:04 AM David Bray, PhD <david.a.bray at gmail.com>
>> wrote:
>>
>> ...
>> >
>> > Meanwhile China probably will land humans on the moon within the next
>> four
>> > years of whomever is the next U.S. President. That may happen before the
>> > U.S. returns to the Moon. Either way, a "base" on the Moon by 2035
>> (which
>> > is PRC's goal) even if it's robots - or humans with the risk of loss of
>> > life) raises some challenges in terms of SIGINT, GEOINT, and the general
>> > ability to hurl rocks into Earth's gravity well....
>
> >
>>
>>
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