In the book “Frontiers II” (Truman Talley Books/Plume, 1993) by Janet and Isaac Asimov the authors describe potential dangers that are hidden in deep space and can considerably influence the Earth or crush it at once. The Asimovs explain the nature of cosmic rays and describe various kinds of meteors from an ice planet to a meteoroid, which is only several feet in size (cf. page 154-174.)
The authors introduce the definition of cosmic rays, stating that they are charged to the unimaginable extent energetic particles, which sources are supernovas’ explosions or black holes’ activity. The Asimovs clarify that the particles cross huge distances in interstellar space, preserving its high energy’s values and cutting almost everything on their way. The Asimovs add that our planet is constantly bombarded by these particles and the Earth’s atmosphere is the only hindrance, which makes the rays weaker and prevent them from making life creatures dead.
The authors represent a conjecture, which probably explains Uranus’ and Triton’s orbits abnormalities. They state that enormously-sized objects in comparison with ordinary planets are attracted from outer space. The authors underline that the objects are called Ice Planets; moreover, the Asimovs conclude that the abovementioned orbits’ abnormalities are results of the collision with Ice Planets.
The authors present a potential danger, which concerns various kinds of meteors and their interactions with the Earth. The Asimovs emphasize that a meteoroid, which is only ten kilometers in diameter, is able to cause fatal damage to our planet.
A. Asimov stresses the fact that it would be essential for humans to create a kind of “Space Watch” (A. & J. Asimov, 1993, Frontiers II page 166.) A. Asimov notes that he had been advocating this idea for thirty years. The author claims that the satellite will help to detect meteors, which can be considered dangerous for the Earth.
The Authors introduce an idea of using the nearest meteors as an extra source of various resources. They stress the fact that the resources on Earth are limited.
Adopted from: Asimov, I. & J. (Truman Talley Books/Plume, 1993), Frontiers II (pages 154-174)
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5 comments:
Hi~ Evghanii. I'm Jee-won
Actually, when you did present about your summary, I didn't understand what you talk about at all because of my less paying attention, but it might be metore is not the object well-known to the people so that I was confused and bored with your topic. However, now I read your article again there are some interesting point that author argue with metore is evidence of activity and explosion of black hole. As well as, it is potential danger that has strong power to destoy the whole earth. I hope it will be not happening. Anyway, thanks to read my comment.
Hi Evghani..Ok so i told you before the earth might get sowlled by black hole but you told me there is a very "tini-tiny" possiblity of this to happen but now YES there is a chance that earth can be hit by a big mass of rocks which as you explained to me it's not a star,,but that's good that we have "Uranius" to protect or lovely earth..LOL
thx Evghani
It was cognotive to read your 4th summary because I found out more new things that I did not know before.
I saw the author's statement where he emphasize that only huge meteoroids can bring damage to the Earth, which tool did he used to hold up his point? Does it mention in the book?
I'm interested if the scientists can predict the time when the Earth can collide into one of the meteoroids. If is there possibility that one day the Earth disappear because of the collision?
Dina, you are welcome! ;)
Kind Regards.
Mirjan, you are partly right. Certainly, collisions with huge meteors will damage the Earth. On the other hand, the authors did not consider huge meteors. Meteoroids that only ten kilometers in diameter are supposed to be relatively small. And, nevertheless, they are able to completely destroy our planet. Moreover, if a meteor is less than ten kilometers it can also crush the Earth. The explosion's power will be similar to a nuclear bomb even if a meteor is one-two kilometers in diameter.
The authors did not explain the tools that would help to define the effects of such a collision. However, it looks trivial if we take into consideration meteors' size and velocity.
There were such collisions in the past of our planet. The dreadful results can be seen in Arizona.
http://www.meteorcrater.com/index.php
Yes, absolutely true. The Earth can sporadically disappear as a result of a collision with a meteor. And collisions can be predicted. Scientists just need to assess meteors' trajectory and compare it with ours. On the other hand it can turn out so, that they detect the object too late and nothing would be possible to do.
Kind Regards.
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