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(Phys Org2)   Further study of earth-crossing asteroid Apophis reveals it affected by Yarkovsky acceleration, which could cause GIANT ASTEROID 2068 bumper stickers to be only half-joking   (phys.org) divider line
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406 clicks; posted to STEM » on 30 Oct 2020 at 5:08 PM (5 weeks ago)   |   Favorite    |   share:  Share on Twitter share via Email Share on Facebook



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2020-10-30 5:01:13 PM  
I'd be lying if I said I didn't have to look it up.  So, from wiki:

"The Yarkovsky effect is a force acting on a rotating body in space caused by the anisotropic emission of thermal photons, which carry momentum. It is usually considered in relation to meteoroids or small asteroids (about 10 cm to 10 km in diameter), as its influence is most significant for these bodies."

Not to be confused with the YORP efffect, which I've also never heard of.
 
2020-10-30 5:29:09 PM  
Are the system lords aware of this yet?
 
2020-10-30 6:18:15 PM  
Pff...2068? I'll already be dead by then.

I want an apocalypse NOW!
 
2020-10-30 6:49:59 PM  
I'll be ... carry the 3 .. 87 years old

Bring it on
 
2020-10-30 7:26:40 PM  
Wait...is Apophis the name of the asteroid, or the name of the guy who put it on a collision course with Earth?
Stargate SG1 - SG1 Takes An Asteroid Through Earth (Season 5 Ep. 17)
Youtube tb1fwG9MPA0
 
2020-10-30 10:05:11 PM  

flondrix: Wait...is Apophis the name of the asteroid, or the name of the guy who put it on a collision course with Earth?
[iFrame https://www.youtube.com/embed/tb1fwG9M​PA0?autoplay=1&widget_referrer=https%3​A%2F%2Fwww.fark.com&start=0&enablejsap​i=1&origin=https%3A%2F%2Fwww.fark.com&​widgetid=1]


Fascinatingly, Apophis on Stargate SG-1 pre-dates (the discovery of) Apophis the asteroid by several years.

I used to work with Dr. Tholen (discoverer of Apophis the asteroid, previously famous for calling out "there's a UFO following the comet!" kooks on Usenet in the 1990s) but don't know whether he was an SG-1 fan, so it's possible, perhaps even probable, that they're both independently named after the Egyptian deity.
 
2020-10-30 10:06:15 PM  
Heck, we might even finesse this and capture it for use as a resource! If people study this and pay attention to it, we have the time and resources to solve the problem.

Being humans however, we will probably wait to the last minute and shrug and curse fate as we watch the impact.
 
2020-10-30 10:19:38 PM  

dbirchall: flondrix: Wait...is Apophis the name of the asteroid, or the name of the guy who put it on a collision course with Earth?
[iFrame https://www.youtube.com/embed/tb1fwG9M​PA0?autoplay=1&widget_referrer=https%3​A%2F%2Fwww.fark.com&start=0&enablejsap​i=1&origin=https%3A%2F%2Fwww.fark.com&​widgetid=1]

Fascinatingly, Apophis on Stargate SG-1 pre-dates (the discovery of) Apophis the asteroid by several years.

I used to work with Dr. Tholen (discoverer of Apophis the asteroid, previously famous for calling out "there's a UFO following the comet!" kooks on Usenet in the 1990s) but don't know whether he was an SG-1 fan, so it's possible, perhaps even probable, that they're both independently named after the Egyptian deity.


A) Apophis is the Greek name of the god Apep. One of my beefs with SG-1 is they always used Greek, rather than Egyptian names for beings that were supposedly the real deal(shut up, you guys get to nerd out over space, I nerd out over ancient history).

B) I was curious, so I did a quick Google. And yes, it does seem they were thinking more SG-1.
 
2020-10-31 3:12:19 AM  

flondrix: Wait...is Apophis the name of the asteroid, or the name of the guy who put it on a collision course with Earth?
[Youtube-video https://www.youtube.com/embed/tb1fwG9M​PA0]


The asteroid in that episode of SG-1 was actually put on a collision course with Earth by Anubis (or possibly the combined efforts of several system lords), not Apophis. Both Anubis and Apophis were system lords in the show, but Apophis was dead by that episode (at least, we're fairly sure this time, we think*).

///*Considering the number of times they killed Apophis in the show, I still expect him to turn up alive somewhere
//Don't know how he could have gotten off his ship before it crashed into Delmak, but he's a sneaky bugger
/Plus Peter Williams was awesome at playing him, which I think is why they kept bringing him back
 
2020-10-31 6:26:07 AM  

JRoo: Pff...2068? I'll already be dead by then.

I want an apocalypse NOW!


I'll almost certainly will be dead to, but it will still have advantages that I could easily live to see. Number one will be a huge increase ro the space program. Number two is increased international cooperation.  Is humanity can't fix the problem by 2068, then humanity deserves everything it will get.
 
2020-10-31 12:40:34 PM  

LurkerSupreme: The asteroid in that episode of SG-1 was actually put on a collision course with Earth by Anubis (or possibly the combined efforts of several system lords), not Apophis. Both Anubis and Apophis were system lords in the show, but Apophis was dead by that episode (at least, we're fairly sure this time, we think*).


Anubis wasn't exactly alive, either.  And last time we saw him, wasn't he...metaphysically challenged and wrestling with a waitress?  I haven't seen the entire series.
 
2020-10-31 1:57:13 PM  

flondrix: LurkerSupreme: The asteroid in that episode of SG-1 was actually put on a collision course with Earth by Anubis (or possibly the combined efforts of several system lords), not Apophis. Both Anubis and Apophis were system lords in the show, but Apophis was dead by that episode (at least, we're fairly sure this time, we think*).

Anubis wasn't exactly alive, either.  And last time we saw him, wasn't he...metaphysically challenged and wrestling with a waitress?  I haven't seen the entire series.


The waitress scene was about 3 seasons ahead of the asteroid episode; it was also the last time anyone heard from Anubis. The 'asteroid through Earth' episode occurred right about when Anubis was just beginning to rise to power.
 
2020-10-31 8:42:08 PM  
That's not good. Bruce willis will be super old by then.
 
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