Astronomy: space conquest and the latest news from the stars

General scientific debates. Presentations of new technologies (not directly related to renewable energies or biofuels or other themes developed in other sub-sectors) forums).
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Re: Astronomy: Space Conquest and Latest Star News




by Christophe » 27/09/22, 15:17

Avoid Bruce Willis going there! : Mrgreen:

Plus he's been in PLS since his covid vaccine!! We are bad, we are bad!! : Lol:
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Re: Astronomy: Space Conquest and Latest Star News




by izentrop » 27/09/22, 16:10

GuyGadeboisLeRetour wrote:Otherwise, what's the point of it all?
to know how in the future to divert an asteroid which would darken towards the earth.
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Re: Astronomy: Space Conquest and Latest Star News




by Remundo » 27/09/22, 19:20

indeed it would be the most effective hypothesis (but it would make a bad American film; big idiots drilling the rock in the vacuum of space to put a thermonuclear bomb there is much more horny!).

a small pulse very far from Earth deviates the trajectory of a NEO by easily 1 km at Earth level.

you still have to not miss it and do it in advance!
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Re: Astronomy: Space Conquest and Latest Star News




by Obamot » 27/09/22, 20:25

...not to mention that if these near-Earth cruisers have never touched the Earth before — on the grounds that the Earth would obviously never have been in their trajectory — then is it a very good idea to deviate their trajectory? so that one day they really become a threat? — do we really have to play with fire? Not to mention that with their "genius" and their calculators, humans could very well simulate the trajectories of these racing cars, to tell us whether or not they would constitute a real threat in the future and when? Which would seem even more hypothetical than almost 4 billion years without impact. Calculations of n/X real probabilities should be made and not point to a single hypothetical risk.
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Re: Astronomy: Space Conquest and Latest Star News




by gegyx » 27/09/22, 21:06

No fear, the land has always been protected, by...

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Re: Astronomy: Space Conquest and Latest Star News




by Remundo » 27/09/22, 23:14

Obamot wrote:...not to mention that if these near-Earth cruisers have never touched the Earth before — for the reason that the Earth would obviously never have been in their trajectory —

there were near-Earth cruisers, probably many even during its formation.

there is also the famous 65 million year old that would have extinguished the dinosaurs.

there is some NEO surveillance, but not easy.
https://fr.wikipedia.org/wiki/Objet_g%C ... nombrement

there are things after Pluto that don't orbit very cleanly and that, by a somewhat chaotic collision, can suddenly exit into an unpredictable orbit.

I'm not convinced that we can be really effective and no doubt that chance (and especially the immensity of the space vacuum) protects us more than our technology for a long time to come...
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Re: Astronomy: Space Conquest and Latest Star News




by gegyx » 27/09/22, 23:35

for the dinos, "They" let it happen, to allow the arrival of homo sympathicus. : Mrgreen:
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Re: Astronomy: Space Conquest and Latest Star News




by Obamot » 28/09/22, 04:43

Remundo wrote:
Obamot wrote:...not to mention that if these near-Earth cruisers have never touched the Earth before — for the reason that the Earth would obviously never have been in their trajectory —

there were near-Earth cruisers, probably many even during its formation.

there is also the famous 65 million year old that would have extinguished the dinosaurs.

there is some NEO surveillance, but not easy.
https://fr.wikipedia.org/wiki/Objet_g%C ... nombrement

there are things after Pluto that don't orbit very cleanly and that, by a somewhat chaotic collision, can suddenly exit into an unpredictable orbit.

I'm not convinced that we can be really effective and no doubt that chance (and especially the immensity of the space vacuum) protects us more than our technology for a long time to come...
So it would be a good idea to continue to develop this technology, right?
They could use the mass of old HS satellites to propel them against?
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Re: Astronomy: Space Conquest and Latest Star News




by Remundo » 28/09/22, 08:09

old satellites often have piloting problems, and/or do not have enough energy (both to move towards the NEO, but also kinetic because they are not heavy enough).

In my opinion, you need one, or even several satellites dedicated to the mission (for example if the first fails...)
https://fr.wikipedia.org/wiki/Strat%C3% ... o%C3%AFdes

all this is far from over...
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Re: Astronomy: Space Conquest and Latest Star News




by gegyx » 28/09/22, 14:18

Obamot wrote:They could use the mass of old HS satellites to propel them against?

The Russians will take care of it, with everything that passes over their territories (not the HS in priority).
But it will make debris...
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