Jump to content




Welcome to Unexplained Mysteries! Please sign in or create an account to start posting and to access a host of extra features.


- - - - -

Can We Predict When???


  • Please log in to reply
43 replies to this topic

#1    Dakoda

Dakoda

    Apparition

  • Member
  • PipPip
  • 312 posts
  • Joined:31 Aug 2001

Posted 10 October 2001 - 12:58 AM

The most dangerous asteroids, capable of a global disaster, are extremely rare. The threshold size is believed to be 1/2 to 1 km. The threshold for an impact that causes widespread global mortality and threatens civilization almost certainly lies between about 0.5 and 5 km diameter, perhaps near 2 km. But can we predict a hazard of such in the near future?  And if so, what sort of impacts are we looking at???.

"Have you ever noticed.... Anybody going slower than you is an idiot, and anyone going faster than you is a maniac?" -George Carlin

#2    Tommy

Tommy

    Psychic Spy

  • Member
  • PipPipPipPipPipPipPipPip
  • 1,846 posts
  • Joined:18 Jul 2001
  • Gender:Male
  • Location:Somewhere in Boston

Posted 10 October 2001 - 02:12 AM

Hey Dakoda,  :se
                   Interesting topic. Check out the Impact Hazards, Possible Life Extinction section towards the bottom of this link…
http://members.aol.c...ets/meteors.htm  :s1

It provides many useful links with information on these “Potentially Hazardous Asteroids, or ‘PHA’ as the NASA Near Earth Object Program calls them. http://neo.jpl.nasa.gov/index.html

Enjoy

Tommy  :sm

"Superstition created all the gods and angels, all the devils and ghosts, all the witches, demons and goblins, gave us all the augurs, soothsayers and prophets, filled the heavens with signs and wonders, broke the chain of cause and effect, and wrote the history of man in miracles and lies" ~ Robert Green Ingersoll

#3    Dakoda

Dakoda

    Apparition

  • Member
  • PipPip
  • 312 posts
  • Joined:31 Aug 2001

Posted 10 October 2001 - 02:34 AM

Thanx a bunch Tommy :)

"Have you ever noticed.... Anybody going slower than you is an idiot, and anyone going faster than you is a maniac?" -George Carlin

#4    Homer

Homer

    Government Agent

  • Member
  • 3,814 posts
  • Joined:16 Mar 2001
  • Gender:Male
  • Location:Florida

Posted 10 October 2001 - 05:43 PM

According to scientists at NASA's Jet Propulsion Laboratory, there are currently 315 known "potentially hazardous asteroids," or PHAs. Each appears to be on a course that will one day bring it close to Earth's orbit, but scientists stress that none of them are known to be on a collision course with the planet.

Many other asteroids that might be listed as PHAs are thought to be out there but not yet found,
reflecting the fact that researchers don't know how many asteroids are out there, let alone how many might eventually cross the path of Earth.

Homer[glow=color,strength,width]

אַ֭תָּה אֱלֹהֵ֣י יִשְׁעִ֑י

#5    Mystify

Mystify

    Remote Viewer

  • Member
  • PipPipPipPip
  • 547 posts
  • Joined:10 Jul 2001

Posted 10 October 2001 - 06:43 PM

If an asteriod were travelling at the speed of light or somewhere in the vicinity, could we detect something like this before it is too late?

I'm here today because of the past, i respect my self and all i have become and there for i do not regret the road i've walked.

#6    Homer

Homer

    Government Agent

  • Member
  • 3,814 posts
  • Joined:16 Mar 2001
  • Gender:Male
  • Location:Florida

Posted 11 October 2001 - 08:21 AM

Mystify,

When you want to discuss a fast asteroid, you don't fool around.;D

According to Special Relativity(E=mc^2), the "relavistic mass" of an object increases as its speed increases and approaches infinity as the object's speed approaches the speed of light. This means that it would take an infinite amount of energy and an infinate amount of time to accelerate an object with mass to the speed of light.

Homer[glow=color,strength,width]

אַ֭תָּה אֱלֹהֵ֣י יִשְׁעִ֑י

#7    Tommy

Tommy

    Psychic Spy

  • Member
  • PipPipPipPipPipPipPipPip
  • 1,846 posts
  • Joined:18 Jul 2001
  • Gender:Male
  • Location:Somewhere in Boston

Posted 20 March 2002 - 06:35 PM

Another asteroid nearly takes us by surprise, by cleverly travelling through an astronomical blind spot.  :s8

http://europe.cnn.co...side/index.html

:sk

"Superstition created all the gods and angels, all the devils and ghosts, all the witches, demons and goblins, gave us all the augurs, soothsayers and prophets, filled the heavens with signs and wonders, broke the chain of cause and effect, and wrote the history of man in miracles and lies" ~ Robert Green Ingersoll

#8    Homer

Homer

    Government Agent

  • Member
  • 3,814 posts
  • Joined:16 Mar 2001
  • Gender:Male
  • Location:Florida

Posted 20 March 2002 - 07:06 PM

Stupid Sun ;D

אַ֭תָּה אֱלֹהֵ֣י יִשְׁעִ֑י

#9    PurpleStuart

PurpleStuart

    Goth

  • Member
  • PipPipPipPipPipPipPipPip
  • 2,118 posts
  • Joined:12 Jan 2002
  • Gender:Male
  • Location:London

  • The Most Purple Haired Gothic Hedonistic member of the Six Worst Men of the Apfelschnaps

Posted 20 March 2002 - 09:21 PM

I s'pose we should be pleased that it has awakened people to the possibility that an asteroid could be hidden by sunlight...

never take me too seriously

#10    SpaceyKC

SpaceyKC

    Government Agent

  • Member
  • 3,349 posts
  • Joined:06 Mar 2001
  • Gender:Female
  • Location:United States

  • Thank you TO

Posted 20 March 2002 - 10:50 PM

            Sure was nice of them to 'send us a memo'   (after the fact!).   :s9
           
           

"Science may have found a cure for most evils;  but it has
         found no remedy for the worst of them all --- the apathy of human beings."
                                                     Helen Keller

#11    Homer

Homer

    Government Agent

  • Member
  • 3,814 posts
  • Joined:16 Mar 2001
  • Gender:Male
  • Location:Florida

Posted 20 March 2002 - 10:56 PM

Funding is already very low with trying to locate asteroids we CAN see, and now we have to concern ourselves with the 'hidden ones' as well. What a nightmare.

אַ֭תָּה אֱלֹהֵ֣י יִשְׁעִ֑י

#12    Sheff_Pud

Sheff_Pud

    Alien Embryo

  • Member
  • Pip
  • 112 posts
  • Joined:13 Jan 2002

Posted 21 March 2002 - 12:17 AM

We just have to hope they land at night then-to be safe.  :s01

Surgeons must be very carefulWhen they take the knife!Underneath their fine incisionsStirs the Culprit -- Life!                            (Emily Dickinson)

#13    PurpleStuart

PurpleStuart

    Goth

  • Member
  • PipPipPipPipPipPipPipPip
  • 2,118 posts
  • Joined:12 Jan 2002
  • Gender:Male
  • Location:London

  • The Most Purple Haired Gothic Hedonistic member of the Six Worst Men of the Apfelschnaps

Posted 21 March 2002 - 12:19 AM

:s2 :s2 :s2 :s2 :s2
*falls off chair*

never take me too seriously

#14    NessyK

NessyK

    Alien Embryo

  • Member
  • Pip
  • 52 posts
  • Joined:15 Jan 2002

Posted 21 March 2002 - 01:59 AM

:s8

OK, which one of you watched Armageddon last night on TV?!!

:s2


#15    Magikman

Magikman

    Most Exalted member of the first 15

  • Member
  • 6,280 posts
  • Joined:06 Mar 2001
  • Gender:Male
  • Location:United States

  • "Quidquid latine dictum sit, altum viditur"

Posted 21 March 2002 - 07:34 AM

 This news is atleast a little bit reassuring, considering the inattention and lack of funding previously given the threat in the past;

http://www.space.com/scienceastronomy/solarsystem/asteroid_sentry_020314.html

Magikman  :sg

Skeptical scrutiny is the means, in both science and religion, by which deep insights can be winnowed from deep nonsense. ~ Carl Sagan

"...man has an irrepressible tendency to read meaning into the buzzing confusion of sights and sounds impinging on his senses; and where no agreed meaning can be found, he will provide it out of his own imagination." ~ Arthur Koestler




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users