Do you have adblock enabled?
 
If you can read this, either the style sheet didn't load or you have an older browser that doesn't support style sheets. Try clearing your browser cache and refreshing the page.

(Syfy)   Here we see a comet on its very first trip into the inner solar system   ( syfy.com) divider line
    More: Cool, sun, Planet, comet, Solar System, extremely elliptical orbit, Mercury, Moon, 20-kilometer wide chunk  
•       •       •

1776 clicks; posted to Geek » on 30 Sep 2017 at 2:11 PM (3 weeks ago)   |   Favorite    |   share:  Share on Twitter share via Email Share on Facebook   more»



25 Comments     (+0 »)
 
View Voting Results: Smartest and Funniest
 
2017-09-30 10:43:59 AM  
Is this our last ditch weapon to kill Sharktopus?
 
2017-09-30 12:27:20 PM  
img.fark.net
 
2017-09-30 02:28:38 PM  
Damn!
We could all see it if the world hadn't ended on Sept. 23rd.
Damn!
 
2017-09-30 02:29:04 PM  
 
2017-09-30 02:36:28 PM  
When it swings past us and heads back out into deep space, it's not coming back. Ever.

Rendezvous?
 
2017-09-30 02:38:37 PM  

LewDux: When it swings past us and heads back out into deep space, it's not coming back. Ever.

Rendezvous?


Rama is cylindrical
 
2017-09-30 02:45:54 PM  
That's out past Uranus.
 
2017-09-30 02:47:09 PM  
'Cool'?
Bloody cold, I'd say.
 
2017-09-30 02:50:37 PM  
It's coming right at us!

img.fark.net
 
2017-09-30 03:02:17 PM  

captjc: It's coming right at us!

[img.fark.net image 320x213]


I sure picked a bad week to stop sniffing glue.
 
2017-09-30 03:22:46 PM  

Closeup view of "comet"


img.fark.net

 
2017-09-30 03:39:19 PM  
so... not a comet
I believe a comet is defined as a comet by virtue of having an orbit.
this thing is coming in for the first time, fast enough that it's got escape velocity to leave the system and will never come back.
wouldn't it be more of a big icy rogue asteroid than a comet? Maybe a KBO that got smacked our way?
 
2017-09-30 03:39:40 PM  
unless i'm wrong.
am i wrong?
 
2017-09-30 03:47:49 PM  

ThatGuyOverThere: so... not a comet
I believe a comet is defined as a comet by virtue of having an orbit.
this thing is coming in for the first time, fast enough that it's got escape velocity to leave the system and will never come back.
wouldn't it be more of a big icy rogue asteroid than a comet? Maybe a KBO that got smacked our way?


ThatGuyOverThere: unless i'm wrong.
am i wrong?


From the IAU's site:

A comet is a body made of rock and ice, typically a few kilometres in diameter, which orbits the Sun. Comets may pass by the Sun only once or go through the Solar System periodically.
...
It is then given a designation according to the following pattern (see Resolution C.5 approved by the IAU in 1995 on p.32 of this PDF):
A prefix, alluding to the type of comet, which can be any of the following:
P/ for a periodic comet.
C/ for a comet that is not periodic.
X/ for a comet for which a meaningful orbit cannot be computed.
D/ for a periodic comet that no longer exists or is deemed to have disappeared.
The year of discovery.
An uppercase letter identifying the half-month of observation during that year (A for first half of January, B for second half and so on).
A number representing the order of discovery within that half month.

Relevant bits on why you are wrong in bold.
 
2017-09-30 03:49:14 PM  
Not that I didn't have to look it up, so you are wrong only as much as you don't work for the IAU.  I only looked it up because I generally trust Phil Plait not to get that sort of thing wrong.
 
2017-09-30 03:49:40 PM  

ThatGuyOverThere: unless i'm wrong.
am i wrong?


I'm just going to say that I've never heard that definition of a comet before. There have been other comets on hyperbolic orbits, so that they only make one visit. They either fell in from the distant Oort cloud, or maybe even interstellar space, hard to tell.
https://en.wikipedia.org/wiki/List_of_hyperbolic_comets
 
2017-09-30 03:50:40 PM  

phalamir: ThatGuyOverThere: so... not a comet
I believe a comet is defined as a comet by virtue of having an orbit.
this thing is coming in for the first time, fast enough that it's got escape velocity to leave the system and will never come back.
wouldn't it be more of a big icy rogue asteroid than a comet? Maybe a KBO that got smacked our way?

ThatGuyOverThere: unless i'm wrong.
am i wrong?

From the IAU's site:

A comet is a body made of rock and ice, typically a few kilometres in diameter, which orbits the Sun. Comets may pass by the Sun only once or go through the Solar System periodically.
...
It is then given a designation according to the following pattern (see Resolution C.5 approved by the IAU in 1995 on p.32 of this PDF):
A prefix, alluding to the type of comet, which can be any of the following:
P/ for a periodic comet.
C/ for a comet that is not periodic.
X/ for a comet for which a meaningful orbit cannot be computed.
D/ for a periodic comet that no longer exists or is deemed to have disappeared.
The year of discovery.
An uppercase letter identifying the half-month of observation during that year (A for first half of January, B for second half and so on).
A number representing the order of discovery within that half month.

Relevant bits on why you are wrong in bold.


Just want to add that it's the active outgassing that distinguishes a comet from an asteroid.
 
2017-09-30 04:08:37 PM  
img.fark.net

Do you want to end up with naked space vampires?

Because this is how we end up with naked space vampires.
 
2017-09-30 04:28:35 PM  

phalamir: Not that I didn't have to look it up, so you are wrong only as much as you don't work for the IAU.  I only looked it up because I generally trust Phil Plait not to get that sort of thing wrong.


well alright then
Today i learned.
and having just watched the netflix show about shatner interviewing the notorious NDT, hawking, kaku, suzuki, hadfield, etc.. it's a very spacey day.
I was surprised how much i liked that show. not gonna lie, the show went pretty blurry on me when hadfield talked about the harsh reality of what gravity is and spending all that time in space, but now having to look up at the ISS as it goes overhead and remember what he once was and will never be again.
 
2017-09-30 04:39:02 PM  

BullBearMS: [img.fark.net image 850x342]

Do you want to end up with naked space vampires?

Because this is how we end up with naked space vampires.


Yes.
 
2017-09-30 04:46:22 PM  
cinema.cornell.edu
I READ THE COMMENTS, RAY
 
2017-09-30 05:12:52 PM  
The Earth is closed. The moon out front should have told you.
 
2017-09-30 06:53:50 PM  
I'm glad Bad Astronomy's host-of-the-month is now SyFy. Forbes didn't like letting me read the articles so I didn't bother patronizing their site.
 
2017-09-30 06:56:53 PM  
Also, the scientist who discovered the comet should have named it 'Nibiru' for maximum trolling.
 
2017-10-01 12:47:00 AM  

BullBearMS: [img.fark.net image 850x342]

Do you want to end up with naked space vampires?

Because this is how we end up with naked space vampires.


yes

yes I do
 
Displayed 25 of 25 comments

View Voting Results: Smartest and Funniest

This thread is closed to new comments.

Continue Farking

On Twitter





Top Commented
Javascript is required to view headlines in widget.
  1. Links are submitted by members of the Fark community.

  2. When community members submit a link, they also write a custom headline for the story.

  3. Other Farkers comment on the links. This is the number of comments. Click here to read them.

  4. Click here to submit a link.

Report