Current Events > Green comet zooming our way, last visited 50,000 years ago

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Tom_Joad
01/27/23 6:23:44 PM
#1:


https://apnews.com/article/science-planets-af15da666c16b784e79f2fead8bc01ac

https://gamefaqs.gamespot.com/a/user_image/6/9/3/AAfQqfAAEIVF.jpg

CAPE CANAVERAL, Fla. (AP) A comet is streaking back our way after 50,000 years.

The dirty snowball last visited during Neanderthal times, according to NASA. It will come within 26 million miles (42 million kilometers) of Earth Wednesday before speeding away again, unlikely to return for millions of years.

So do look up, contrary to the title of the killer-comet movie Dont Look Up.

Discovered less than a year ago, this harmless green comet already is visible in the northern night sky with binoculars and small telescopes, and possibly the naked eye in the darkest corners of the Northern Hemisphere. Its expected to brighten as it draws closer and rises higher over the horizon through the end of January, best seen in the predawn hours. By Feb. 10, it will be near Mars, a good landmark.

Skygazers in the Southern Hemisphere will have to wait until next month for a glimpse.

While plenty of comets have graced the sky over the past year, this one seems probably a little bit bigger and therefore a little bit brighter and its coming a little bit closer to the Earths orbit, said NASAs comet and asteroid-tracking guru, Paul Chodas.

Green from all the carbon in the gas cloud, or coma, surrounding the nucleus, this long-period comet was discovered last March by astronomers using the Zwicky Transient Facility, a wide field camera at Caltechs Palomar Observatory. That explains its official, cumbersome name: comet C/2022 E3 (ZTF).

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Heartomaton
01/27/23 6:25:11 PM
#3:


To make a wish on this one, you gotta be stoned as fuck.

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FortuneCookie
01/27/23 6:25:49 PM
#4:


50,000 years ago, huh? This thing is going to cause mass mutation/evolutionary changes, isn't it?

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Tom_Joad
01/27/23 6:27:20 PM
#5:


Heartomaton posted...
To make a wish on this one, you gotta be stoned as fuck.

Or just drunk off the Green Faerie, ie: Absinthe.

How to drink Absinthe:
https://gamefaqs.gamespot.com/a/user_image/6/9/4/AAfQqfAAEIVG.jpg

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Ratchetrockon
01/27/23 6:28:44 PM
#6:


where the heck did it travel to 50k years ago and why is it coming back

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Master_Bass
01/27/23 6:30:06 PM
#7:


This comet judges life on planets every 50,000 years. Maybe this time we'll be deemed worthy.

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Tom_Joad
01/27/23 6:30:42 PM
#8:


Ratchetrockon posted...
where the heck did it travel to 50k years ago and why is it coming back

Probably the Kuiper belt or the Oort cloud.
https://en.wikipedia.org/wiki/Kuiper_belt
https://en.wikipedia.org/wiki/Oort_cloud


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mustachedmystic
01/27/23 6:37:04 PM
#9:


Ratchetrockon posted...
where the heck did it travel to 50k years ago and why is it coming back
Is dis supposed to be a joke?

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Ratchetrockon
01/27/23 6:57:12 PM
#10:


Tom_Joad posted...
Probably the Kuiper belt or the Oort cloud.
https://en.wikipedia.org/wiki/Kuiper_belt
https://en.wikipedia.org/wiki/Oort_cloud

Oo interesting

mustachedmystic posted...
Is dis supposed to be a joke?


no idk why it would come back lol

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Irony
01/27/23 6:58:47 PM
#11:


How do we know it was here 50,000 years ago

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Solar_Crimson
01/27/23 6:59:24 PM
#12:


Too bad it's been very cloudy here all this week.

Ratchetrockon posted...
where the heck did it travel to 50k years ago and why is it coming back
Many comets in our solar system have similar or even longer orbital periods.

Ratchetrockon posted...
no idk why it would come back lol
It's still bound to our solar system so it will eventually return to the inner solar system during its long orbit.

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kirbymuncher
01/27/23 7:01:29 PM
#13:


Ratchetrockon posted...
no idk why it would come back lol
it orbits the sun. it's just a very long, far away orbit

the "coming back" part is because unlike the orbits of the planets, which are mostly circular, orbits of comets can be very stretched ovals, which means during some parts of the orbit they are very close to the sun (aka when we're going to see it) and during other parts they are very very far away

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Solar_Crimson
01/27/23 7:03:55 PM
#14:


For example, this comet has a 78,000-year orbit:
https://en.wikipedia.org/wiki/C/1992_J1_(Spacewatch)


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Ratchetrockon
01/27/23 7:07:41 PM
#15:


Solar_Crimson posted...
It's still bound to our solar system so it will eventually return to the inner solar system during its long orbit.

kirbymuncher posted...
it orbits the sun. it's just a very long, far away orbit

the "coming back" part is because unlike the orbits of the planets, which are mostly circular, orbits of comets can be very stretched ovals, which means during some parts of the orbit they are very close to the sun (aka when we're going to see it) and during other parts they are very very far away


Ohhhh. I didn't know 50k years away was still within our solar system what the frick

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FortuneCookie
01/27/23 7:10:04 PM
#16:


https://gamefaqs.gamespot.com/a/user_image/7/1/8/AAdlC_AAEIVe.jpg
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Solar_Crimson
01/27/23 7:14:03 PM
#17:


Ratchetrockon posted...
Ohhhh. I didn't know 50k years away was still within our solar system what the frick
Our Solar System is huge, and we still really don't know where exactly it ends.

That said, time =/= distance. An object that takes 50k years to orbit the Sun still could not reach anywhere close to the edge of the solar system at its furthest point, depending on how fast it actually travels.

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Alteres
01/27/23 7:17:31 PM
#18:


They said it probably wont return for millions of years.

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MrKapowski
01/27/23 7:20:50 PM
#19:


Pre dawn huh?

How early do I need to get up, and where do I look?

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indica
01/27/23 7:27:50 PM
#20:


FortuneCookie posted...
https://gamefaqs.gamespot.com/a/user_image/7/1/8/AAdlC_AAEIVe.jpg
That dude was like the Tyler Perry of the 90s. What ever happened to him?

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BettyWhite
01/27/23 7:37:04 PM
#21:


Jenova is on her way boyzzz.

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mustachedmystic
01/27/23 7:39:57 PM
#22:


Ratchetrockon posted...
no idk why it would come back lol
You cannot be serious.

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Ratchetrockon
01/27/23 7:53:12 PM
#23:




Solar_Crimson posted...
Our Solar System is huge, and we still really don't know where exactly it ends.

That said, time =/= distance. An object that takes 50k years to orbit the Sun still could not reach anywhere close to the edge of the solar system at its furthest point, depending on how fast it actually travels.

Thanks for the info

mustachedmystic posted...
You cannot be serious.


well i was and i do feel a bit embarrassed that i didnt even consider the comet was still orbiting our sun lol. thought it would have gone off to a diff solar system by now. i underestimated the size of our solar system and overestimated the speed of the comet


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kuwab0
01/27/23 8:08:17 PM
#24:


indica posted...
That dude was like the Tyler Perry of the 90s. What ever happened to him?
Meteor Man happened

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mustachedmystic
01/27/23 8:08:45 PM
#25:


Everything in the system(that isnt orbiting something else) is orbiting the sun.

I thought the edge of the system was pretty well known as where the pressure from the solar wind is in balance with the interstellar medium.

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kirbymuncher
01/27/23 8:16:15 PM
#26:


Ratchetrockon posted...
i underestimated the size of our solar system
https://gamefaqs.gamespot.com/a/user_image/7/6/1/AAOx38AAEIWJ.jpg

the pink is this comet's orbit, cut off at the end because wow you'd really have to zoom out far to fit the whole thing in. it's hard to really comprehend as a 2D image since space is 3D but it should at least give an idea of the relative size of it and the orbits of the planets

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