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Massive Meteor Strikes the Moon

Posted: Sat Jul 08, 2017 10:01 am
by absinthe beginner
Imagine if it would've hit the earth instead. Relatively small meteors can do tremendous damage.

https://www.theburningplatform.com/2017 ... ikes-moon/

A meteor with the explosive power of ten cruise missiles has struck the Moon – sparking a massive explosion visible with the naked eye. And terrifyingly the 56,000 mph collision – captured by NASA scientists highlighting the catastrophic danger planet earth faces from similar meteors – was caused by a space rock weighing no more than 88 lbs (40 kilos). Despite the meteor’s tiny proportions – about the size of a small boulder and the weight of an average 10-year-old boy – the impact damage was colossal and the explosion shone with the brightness of a magnitude 4 star. A similar strike against a city on earth would create a crater 65feet (20m) deep and create a devastating kill zone equivalent to TEN Tomahawk cruise missile striking in exactly the same place. Experts fear the death toll would run into thousands.

Re: Massive Meteor Strikes the Moon

Posted: Sat Jul 08, 2017 10:08 am
by TacAir
Moon - No air

Earth - lots of atmosphere.

NASA - budget whores.

Story /.

Re: Massive Meteor Strikes the Moon

Posted: Sat Jul 08, 2017 11:36 am
by JackBauer
Thanks for sharing Absinthe!

Time for a re-read of Stephenson's Seveneves.

Re: Massive Meteor Strikes the Moon

Posted: Sat Jul 08, 2017 11:58 am
by Halfapint
Our Moon is a meat shield, that is it's purpose in this universe. As TacAir said it has no atmosphere so it hits very hard. something like an 88lb rock hitting the earth could if it made it to the ground do some damage, however most the time they disintegrate in our atmosphere or explode from the heat.

Re: Massive Meteor Strikes the Moon

Posted: Sat Jul 08, 2017 1:02 pm
by flybynight
" There is increasing interest in identifying asteroids whose orbits cross Earth's, and that could, given enough time, collide with Earth (see Earth-crosser asteroids). The three most important groups of near-Earth asteroids are the Apollos, Amors, and Atens. Various asteroid deflection strategies have been proposed, as early as the 1960s.
The near-Earth asteroid 433 Eros had been discovered as long ago as 1898, and the 1930s brought a flurry of similar objects. In order of discovery, these were: 1221 Amor, 1862 Apollo, 2101 Adonis, and finally 69230 Hermes, which approached within 0.005 AU of Earth in 1937. Astronomers began to realize the possibilities of Earth impact.
Two events in later decades increased the alarm: the increasing acceptance of the Alvarez hypothesis that an impact event resulted in the Cretaceous–Paleogene extinction, and the 1994 observation of Comet Shoemaker-Levy 9 crashing into Jupiter. The U.S. military also declassified the information that its military satellites, built to detect nuclear explosions, had detected hundreds of upper-atmosphere impacts by objects ranging from one to 10 metres across.
All these considerations helped spur the launch of highly efficient surveys that consist of charge-coupled device (CCD) cameras and computers directly connected to telescopes. As of spring 2011, it was estimated that 89% to 96% of near-Earth asteroids one kilometer or larger in diameter had been discovered.[15] A list of teams using such systems includes

https://en.wikipedia.org/wiki/Lincoln_N ... d_Research

https://en.wikipedia.org/wiki/Near-Eart ... d_Tracking

https://en.wikipedia.org/wiki/Spacewatch

https://en.wikipedia.org/wiki/LONEOS

https://en.wikipedia.org/wiki/Catalina_Sky_Survey

https://en.wikipedia.org/wiki/Campo_Imp ... ect_Survey

https://en.wikipedia.org/wiki/Japanese_ ... ssociation

https://en.wikipedia.org/wiki/Asiago-DL ... oid_Survey

https://en.wikipedia.org/wiki/Pan-STARRS

From Wikipedia article about asteroids
https://en.wikipedia.org/wiki/Asteroid

Image

Re: Massive Meteor Strikes the Moon

Posted: Sun Jul 09, 2017 12:38 pm
by Confucius
Massive is a bit of an overstatement...

The one that exploded over Chelyabinsk a few years back weighed in over 10,000 tons.

Re: Massive Meteor Strikes the Moon

Posted: Sun Jul 09, 2017 6:58 pm
by TacAir
To add-

I don't completely blow off the idea of a space body hitting the moon. The bit in the OP was tiny. Minuscule by astronomical standards. Of real worry is something size of Shoemaker–Levy 9 smacking into the moon.

Calculations showed that Shoemaker–Levy 9's unusual fragmented form was due to a previous closer approach to Jupiter in July 1992. At that time, the orbit of the comet passed within Jupiter's Roche limit, and Jupiter's tidal forces had acted to pull apart the comet.

The comet was later observed as a series of fragments ranging up to 2 km (1.2 mi) in diameter.
That, as they say, is going to leave a mark.

These fragments collided with Jupiter's southern hemisphere between July 16 and July 22, 1994 at a speed of approximately 60 km/s (37 mi/s) (Jupiter's escape velocity) or 216,000 km/h (134,000 mph). The prominent scars from the impacts were more easily visible than the Great Red Spot and persisted for many months.

Something that large - traveling that fast and that smacks into the moon is going to knock some serious shi....err, stuff loose. Some of these debris bits may have enough energy to escape the moon's gravity well, to even make it past the Earth/Moon Trojan points and come to my neighborhood for a visit.

And so I wrote a book series (WoC) about just what could happen when:
*People see a chunk of moon missing
*Said chunk(s) land(s) on Earth.

Fun to write, but I'm sure the real situation will be much worse that I could imagine. A bit of space 'debris' 1.2 kM wide hitting anywhere on Earth could well be an E. L. E.

It would certainly change life (as we know it) for several generations......if anyone survives.

This, because I'm pretty sure that a squadron of endo/extoatmospheric interceptors, equipped with nukes, isn't in the current TO&E for the Air Force.. Sadly tho, they could be.

Re: Massive Meteor Strikes the Moon

Posted: Sun Jul 09, 2017 11:57 pm
by Stercutus
What are we waiting for, lets break out the Sun Swords

Image

Re: Massive Meteor Strikes the Moon

Posted: Tue Jul 11, 2017 8:13 pm
by grennels
Just bought the WoC series.

Re: Massive Meteor Strikes the Moon

Posted: Tue Jul 11, 2017 9:50 pm
by Close_enough
absinthe beginner wrote:Imagine if it would've hit the earth instead. Relatively small meteors can do tremendous damage.

https://www.theburningplatform.com/2017 ... ikes-moon/

A meteor with the explosive power of ten cruise missiles has struck the Moon – sparking a massive explosion visible with the naked eye. And terrifyingly the 56,000 mph collision – captured by NASA scientists highlighting the catastrophic danger planet earth faces from similar meteors – was caused by a space rock weighing no more than 88 lbs (40 kilos)
You might want to take off your hard hat. The Cheblynsk asteroid weighted 10 tons, was travelling at 2/3 the speed, and still came apart 2miles up. A lille 88 lb rock, zipping along at that speed wwill leave spectacular tail, but not much more.

Now, a kilometer wide, billion ton asteroid will mean the end of most life. Bruce Willis, or not.

Re: Massive Meteor Strikes the Moon

Posted: Tue Jul 11, 2017 10:43 pm
by Confucius
Close_enough wrote:
absinthe beginner wrote:Imagine if it would've hit the earth instead. Relatively small meteors can do tremendous damage.

https://www.theburningplatform.com/2017 ... ikes-moon/

A meteor with the explosive power of ten cruise missiles has struck the Moon – sparking a massive explosion visible with the naked eye. And terrifyingly the 56,000 mph collision – captured by NASA scientists highlighting the catastrophic danger planet earth faces from similar meteors – was caused by a space rock weighing no more than 88 lbs (40 kilos)
You might want to take off your hard hat. The Cheblynsk asteroid weighted 10 tons, was travelling at 2/3 the speed, and still came apart 2miles up. A lille 88 lb rock, zipping along at that speed wwill leave spectacular tail, but not much more.

Now, a kilometer wide, billion ton asteroid will mean the end of most life. Bruce Willis, or not.
Point of interest, most sources I've seen place the chelyabinsk meteor between 10,000 and 13,000 tons when it entered the atmosphere.

http://www.space.com/33623-chelyabinsk- ... earth.html

Was a honking big rock...

Re: Massive Meteor Strikes the Moon

Posted: Tue Jul 11, 2017 11:36 pm
by TacAir
grennels wrote:Just bought the WoC series.
As a 'starving artist' thank you very much!

Stop back by and let me know what you think, I'd appreciate any feedback you might have.

Re: Massive Meteor Strikes the Moon

Posted: Tue Jul 11, 2017 11:40 pm
by fred.greek
Consider Shoemaker–Levy, which hit Jupiter back in 1994. Despite the gravity of Jupiter, which is much more than Earth, NASA recorded explosions that went significantly above the “surface” of the planet.

Re: Massive Meteor Strikes the Moon

Posted: Wed Jul 12, 2017 5:48 am
by flybynight
fred.greek wrote:Consider Shoemaker–Levy, which hit Jupiter back in 1994. Despite the gravity of Jupiter, which is much more than Earth, NASA recorded explosions that went significantly above the “surface” of the planet.
Just ...no...