It has been mentioned elsewhere on the forum, the fact that we are due for an Asteroid strike. Assuming that we do, at sometime in the near future, do our World leaders have any contihgency plans to put into place to deal with such a threat.
I am presuming that if we have the solution, it is viable, however, IF the Asteroid is so large than it can’t be destroyed prior to it hitting Earth, what would you do, considering that it would be , say in 6 months time?.
Lincoln. 7
By: PeeDee - 25th February 2011 at 17:45
😮 wrong ! physics , Go read . 🙂
I read too deep, Earthling.
By: PeeDee - 25th February 2011 at 17:43
Another conundrum.
The “Force” of gravity. What if it has a polarity? A bit like electric?
What happens if there is an opposite polarity somewhere? A repel attract repel situation.
……I’ve not opened these books since skool!
By: PeeDee - 25th February 2011 at 17:36
Wrong
Gravity is the weakest of all the forces, but is one of the hardest to overcome
Ah, but mathematically it is the weakest of the 4 fundamentals, but it still carries the force to pull on a Rock several billion light years away. Yet you can hold that rock and lob it vertically if on Earth.
The collective forces of the centre of the Galaxy should mathematically be powerful enough to be reversing the bang. But they aren’t..yet. Do we know for sure that if we travel to the centre of our Galaxy, we would be crushed by the extra force, which should be present in the middle?
The Newtonian sums give differing results for a Fly or an Elephant due to mass. Yet both feel 1g and both can very easily overcome it.
By: Flygirl - 25th February 2011 at 17:07
Think BIG. Now double it.
The particles of light hitting the sail will give a force. So, estimates as to the size would be measured in Acres. But they are very thin, a couple of thou., so they can be packed up correctly to fit in, shall we say, a “Buildable” spacecraft.
Think not of the weight / mass and speed of the incoming, it is on a path which is pulled by gravity of the sun, and only a slight force is required to overcome gravity, as you clearly demonstrate by shining your pants right now.
Some Satellites already use them to correct minute trajectory alignments. I think the Japs have launched a bug-un too.Gravity, the most powerful force in the Universe, yet we can very easily overcome it. Pity we don’t actually know what it is.
😮 wrong ! physics , Go read . 🙂
By: Bruggen 130 - 25th February 2011 at 17:00
Gravity, the most powerful force in the Universe, yet we can very easily overcome it. Pity we don’t actually know what it is.
Wrong
Gravity is the weakest of all the forces, but is one of the hardest to overcome
By: PeeDee - 25th February 2011 at 16:51
I think we’ll get more than 6 months.
Today’s “In Space” telescopes are picking up Black-cats-in-coal-cellars” at the edge of the known uni.
However, they are often looking at the wrong part of the sky LoL! How many times does an amatuer astronomer find something odd, report it to the appropriate astro sites…..then suddenly all the Dishes in the world turn 180 LoL.
By: PMN - 25th February 2011 at 16:47
Some Satellites already use them to correct minute trajectory alignments.
Indeed, and the Messenger probe that’s on its way to Mercury also uses the technology.
By: Sky High - 25th February 2011 at 16:44
This is all fantasy island stuff…..if we’ve got 6 months then I’ll just take myself off to a beautiful, serene part of the world and, what’s today’s word? – chill!:cool:
By: PeeDee - 25th February 2011 at 16:38
PeeDee and PNM as your both a pair of clever S*** now tell me just how large this sail would need to be to move an incoming about 2 miles in diameter.!950s camera flash PeeDee, you showing your age now. 😀
Lincoln .7
:diablo:
Think BIG. Now double it.
The particles of light hitting the sail will give a force. So, estimates as to the size would be measured in Acres. But they are very thin, a couple of thou., so they can be packed up correctly to fit in, shall we say, a “Buildable” spacecraft.
Think not of the weight / mass and speed of the incoming, it is on a path which is pulled by gravity of the sun, and only a slight force is required to overcome gravity, as you clearly demonstrate by shining your pants right now.
Some Satellites already use them to correct minute trajectory alignments. I think the Japs have launched a bug-un too.
Gravity, the most powerful force in the Universe, yet we can very easily overcome it. Pity we don’t actually know what it is.
By: PMN - 25th February 2011 at 16:07
Lincoln 7, I think you’re confusing me with someone else as I’m asking exactly the same question. Please stop doing this, it’s irritating! :p
By: Lincoln 7 - 25th February 2011 at 15:59
Read up on “Don Quijote” (Not my mispelling!).
PeeDee and PNM as your both a pair of clever S*** now tell me just how large this sail would need to be to move an incoming about 2 miles in diameter.!950s camera flash PeeDee, you showing your age now. 😀
Lincoln .7
:diablo:
By: PeeDee - 25th February 2011 at 15:32
If all we had was 6 months then the best we (as a species) could hope for would be to build some bunkers to try to preserve what life we could to re-populate the earth, assuming of course they would survive the strike.
I have seen lead times varying from 10-25 years when it comes to deflecting an asteroid, either with sales of a chain of nuclear charges.
Read up on “Don Quijote” (Not my mispelling!).
By: PMN - 25th February 2011 at 15:30
😀 😀
By: PeeDee - 25th February 2011 at 15:28
Go on then, PeeDee, explain how we get a solar sail to deflect an incoming…
Easy Peazy!
It folds away like a Flash from a 1950’s camera.
Put it on the Baggage pylon of a suitable handy rocket. Fueled up with OEM unleaded as Morrisons own won’t have the ooomph.
Get to Space.
Find it.
Launch large, cable laden missiles onto the surface, with surface penetrating Anchor Bolts. Military spec, not B&Q.
Attach sail.
Get home for a cuppa.
Didn’t you EVER see Thunderbirds!
By: jbritchford - 25th February 2011 at 15:27
If all we had was 6 months then the best we (as a species) could hope for would be to build some bunkers to try to preserve what life we could to re-populate the earth, assuming of course they would survive the strike.
I have seen lead times varying from 10-25 years when it comes to deflecting an asteroid, either with sales of a chain of nuclear charges.
By: PMN - 25th February 2011 at 15:23
Go on then, PeeDee, explain how we get a solar sail to deflect an incoming…
By: PeeDee - 25th February 2011 at 15:15
(A) Space is not a vacuum. It’s actually impossible to create a perfect vacuum.
(B) The Solar wind is actually what is captured and harnessed by a Solar Sail. And the Solar wind is particle movement.
(C) To deflect an incoming away from Earth would take surprisingly little force, so long as you can get it early enough. Moving it just a few hundredths of a Degree will mean it will miss Earth by thousands of miles.
(D) Bet we are all out tonight, looking skywards!
By: Grey Area - 25th February 2011 at 15:12
Where did I say something would take years? :confused:
You didn’t. It was me. 🙂
By: Lincoln 7 - 25th February 2011 at 15:12
Where did I say something would take years? :confused:
It must have been somewon else, I am typing like mad, in a hurry as the wife wants to go out.:eek:
Linc 7
By: Lincoln 7 - 25th February 2011 at 15:09
I’m no rocket scientist, but these chaps seem to have worked the numbers out.
I prefer the “white paint” option myself. :p
G.A. For Gawds sake please don’t admit you don’t know what your on about, your supposed to be our Mentor:diablo:
Lincoln.7
Sign In
February 25, 2011 at 12:21 pm