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octoberlib

(14,971 posts)
Mon Nov 20, 2017, 05:50 PM Nov 2017

Interstellar object confirmed to be from another solar system

Source: The Guardian

Astronomers are now certain that the mysterious object detected hurtling past our sun last month is indeed from another solar system. They have named it 1I/2017 U1(’Oumuamua) and believe it could be one of 10,000 others lurking undetected in our cosmic neighbourhood.

The certainty of its extraterrestrial origin comes from an analysis that shows its orbit is almost impossible to achieve from within our Solar System.

Its name comes from the Hawaiian term for messenger or scout. Indeed, it is the first space rock to have been identified as forming around another star. Since asteroids coalesce during the process of planet formation, this object can therefore tell us something about the formation of planets around its unknown parent star.

The latest analyses with ground-based telescopes show that ’Oumuamua is quite similar to some comets and asteroids in our own solar system. This is important because it suggests that planetary compositions like ours could be typical across the Galaxy.



Read more: https://www.theguardian.com/science/across-the-universe/2017/nov/20/interstellar-object-confirmed-to-be-from-another-solar-system?CMP=share_btn_tw

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Interstellar object confirmed to be from another solar system (Original Post) octoberlib Nov 2017 OP
Hurry. NT mahatmakanejeeves Nov 2017 #1
We were warned Achilleaze Nov 2017 #2
"Oumuamua to base; Oumuamua to base..." sandensea Nov 2017 #3
The Del-Tinos - Pa pa ooh mau mau (60's GARAGE PUNK) Donkees Nov 2017 #4
Dolt45, if he ever noticed anything to do with science, would claim it was Kenyan... Thor_MN Nov 2017 #5
This is what it looked like - boy oh boy jpak Nov 2017 #6
Wish we could see the rock close up to see if it has any inscriptions Tikki Nov 2017 #16
It broke off its larger mother rock tavernier Nov 2017 #7
That's a stupid headline MurrayDelph Nov 2017 #8
Maybe they thought people wouldn't know what interstellar means. They probably should octoberlib Nov 2017 #10
Actually, everything in our current solar system IS from another solar system LOL snooper2 Nov 2017 #15
! LudwigPastorius Nov 2017 #9
I thought of Arthur C. Clarke. ChazInAz Nov 2017 #11
"First Interstellar Asteroid is Like Nothing Seen Before" Baclava Nov 2017 #12
Another angle: Denzil_DC Nov 2017 #13
VGer has returned! Baclava Nov 2017 #17
First of its kind. longship Nov 2017 #14

sandensea

(21,648 posts)
3. "Oumuamua to base; Oumuamua to base..."
Mon Nov 20, 2017, 06:21 PM
Nov 2017

"The humans are threatening each other with annihilation again...Over..."

Tikki

(14,559 posts)
16. Wish we could see the rock close up to see if it has any inscriptions
Tue Nov 21, 2017, 02:30 PM
Nov 2017

carved in it or placed on it from a civilization somewhere out of our Solar System...

I know, I know...but it would be a shame if something like that happened
unnoticed.

Tikki

octoberlib

(14,971 posts)
10. Maybe they thought people wouldn't know what interstellar means. They probably should
Mon Nov 20, 2017, 09:55 PM
Nov 2017

have left that word out.

 

Baclava

(12,047 posts)
12. "First Interstellar Asteroid is Like Nothing Seen Before"
Mon Nov 20, 2017, 11:31 PM
Nov 2017

That's no asteroid....



"It appears to be a dark, reddish, highly-elongated rocky or high-metal-content object"

"varies dramatically in brightness by a factor of ten as it spins on its axis every 7.3 hours."

longship

(40,416 posts)
14. First of its kind.
Tue Nov 21, 2017, 04:17 AM
Nov 2017

1I/2017 U1

The 1I means it is the first of class of astronomic objects, "Interstellar" being the designation and '1' being the first serial number. "2017 U1" identifies the date of discovery. "U1" means first discovery in the second half of October.

I love the name Oumuamua. BTW, the IAU broke all records for naming this quickly. Good for them.

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