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Post by Red Rackham on Dec 28, 2023 14:51:27 GMT
Nasa launches mission to intercept 'God of Chaos' asteroid surging towards EarthAn investigation has been launched by Nasa into the so-called "God of Chaos" asteroid that could reach the Earth's orbit. The asteroid, formerly titled Apophis, is due to fly by Earth in 2029. An investigation has been launched by Nasa into the so-called "God of Chaos" asteroid that could reach the Earth's orbit. The asteroid, formerly titled Apophis, is due to fly by Earth in 2029. Now, the OSIRIS-APEX spaceship has been sent to study the asteroid, which about 340 meters wide. The passing of the asteroid will be a once-in-7,500-year event, according to NASA scientists and may be visible to some with the naked eye - link
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Post by johnofgwent on Dec 29, 2023 21:19:29 GMT
Yeah. Let’s just set some facts down
MOST asteroid armageddon stories bullshit about a rock crossing the earth’s path. Meaning as the sun progresses through the cosmos, the earth spins round it maintaining a 93 million mile distance. I don’t know what 2 x 3.142 x 90 million is (i do, its 584.412 million) and the earth travels that many miles in 365.25 days which is about 18 miles every second.
So my point is most of these horror tales have a rock passing within ten feet of where the earth was last week
Not this time
The moon is, give or take a bit, a quarter of a million miles away
The Clarke Belt, into which i and 19 others personally put inmarsat satellites into orbit, is 24,850 miles up.
Apophis is going to come within 20,000 miles of the earth’s surface, swinging 4000 miles below, and then back out through, the clarke belt
If this lump of rock’s alignment as it approaches whacks one of my satellites, or anyone else’s, then - well you've all seen i think enough armageddon films …..
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Post by Deleted on Dec 29, 2023 21:37:46 GMT
Yeah. Let’s just set some facts down MOST asteroid armageddon stories bullshit about a rock crossing the earth’s path. Meaning as the sun progresses through the cosmos, the earth spins round it maintaining a 93 million mile distance. I don’t know what 2 x 3.142 x 90 million is (i do, its 584.412 million) and the earth travels that many miles in 365.25 days which is about 18 miles every second. So my point is most of these horror tales have a rock passing within ten feet of where the earth was last week Not this time The moon is, give or take a bit, a quarter of a million miles away The Clarke Belt, into which i and 19 others personally put inmarsat satellites into orbit, is 24,850 miles up. Apophis is going to come within 20,000 miles of the earth’s surface, swinging 4000 miles below, and then back out through, the clarke belt If this lump of rock’s alignment as it approaches whacks one of my satellites, or anyone else’s, then - well you've all seen i think enough armageddon films ….. Coming within 20,000 miles of us is a very near miss in cosmic collision terms. Nevertheless, the chances of a direct hit are far smaller than the chances of a near miss. There will probably be hundreds of large object near misses - if not thousands - for every large object direct hit. The latter - though infrequent - can happen at any time though, and we are far from guaranteed to see it coming at all, let alone in enough time to do anything about it. And one such large object hitting us is thought to have been the primary cause of wiping out the dinosaurs and three quarters of all then living species. We are far more intelligent and adaptable than anything alive back then, yet are nevertheless utterly dependent upon the planetary ecosystem for our food supply. Some of us might conceivably survive such an impact today using technology and artificial habitats to keep our species going, but that could conceivably work for only a tiny fraction of us. The kind of impact that wiped out the dinosaurs would in a relatively short space of time kill most of us too. |
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Post by johnofgwent on Dec 29, 2023 21:46:26 GMT
NASA have themselves backtracked science.nasa.gov/solar-system/asteroids/apophis/ on their earlier impact predictions, citing better observations and understanding What i was getting at was the chance it might whack space debris or orbiting platforms. |
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Post by dodgydave on Dec 30, 2023 1:49:54 GMT
I was reading that it is erupting (venting gas) every few weeks, which is one of many things that make predictions far from accurate.
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Post by johnofgwent on Dec 31, 2023 20:19:18 GMT
I was reading that it is erupting (venting gas) every few weeks, which is one of many things that make predictions far from accurate. i miss usenet In the old days, my demon internet account and its connection to sci.astro.misc would keep me posted on such and the moderator would prune BS or shove it in alt.bullshit |
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Post by Deleted on Jan 1, 2024 0:24:43 GMT
I was reading that it is erupting (venting gas) every few weeks, which is one of many things that make predictions far from accurate. Reminds me of my dear departed grandad after a few too many brussel sprouts. |
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Post by johnofgwent on Jan 1, 2024 2:39:27 GMT
I was reading that it is erupting (venting gas) every few weeks, which is one of many things that make predictions far from accurate. Reminds me of my dear departed grandad after a few too many brussel sprouts. Thank you VERY much It’s 2:31 i’m not sober but not remotely pissed enough and now i’ve got this image of a sprout powered vernier on an asteroid in my head. It’s bad enough that someone told me earlier tonight semen is ejaculated at 20mph and my mind is now going back to a moment of madness on the top of a mountain in 1977 at near midnight on the day of the silver jubilee to revisit the maths of parabolic trajectories. Will i sober up before i solve the sprout metabolism equation I’ll let you know |
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Post by johnofgwent on Jan 1, 2024 11:59:51 GMT
11.5 mph more like.
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