Brightest Objects in the Sky
Can you name the brightest extraterrestrial objects in the sky, as viewed from Earth?
Date from here and elsewhere on Wikipedia
Based on maximal brightness, not average
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Last updated: August 21, 2017
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| First submitted | July 20, 2014 |
| Times taken | 7,558 |
| Rating | 4.20 |
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cuotak
+2
Level 59
Jul 23, 2014
International Space Station?
scambigol
+4
Level 72
Jul 23, 2014
Thanks! I was thinking that maybe I was missing something but I didn't find a proper list.
I've added it at -4 as that's what it says http://en.wikipedia.org/wiki/International_Space_Station
although it can reach -5.9 according to http://en.wikipedia.org/wiki/Apparent_magnitude
TheNewPotato
+1
Level 48
Feb 17, 2016
I am from Beeeeeeeeetlejuice 4!!! (Ford Prefect)
mahble
+1
Level 69
Aug 5, 2017
Why not call yourself Zogg?
GalicianMapper
+1
Level 27
Jul 22, 2016
I thought that there are only included stars. I feel like a fool now.
Djilas
+1
Level 76
Aug 22, 2017
I typed moon, but totally forgot to continue with others ...
ketchupkawawa
+1
Level 46
Jul 18, 2017
Iridium satellite flares? (Just kidding)
jaketk33
+1
Level 56
Aug 30, 2017
I mean that is a valid point. if the ISS is included, why shouldn't Iridium Flares? They can be as bright as mag -7
ahikerfromaustralia
+1
Level 23
Oct 18, 2017
I think only permanent objects should be considered, so no flares. For that matter, the ISS is fairly ephemeral but I think its fair enough to include it.
Jerry928
+1
Level 74
Aug 20, 2017
Why the update? Has a new bright star appeared?
stevediverse
+2
Level 88
Aug 20, 2017
Including ISS is arguable. It originated from earth, and so is not really 'extraterrestrial', plus, technically, it's low earth orbit is still within the earth's atmosphere.
scrumpyone
+1
Level 45
Aug 23, 2017
22% disagree with your logic.
ahikerfromaustralia
+1
Level 23
Oct 18, 2017
It only appears every few days too.
eibi
+1
Level 73
Jan 23, 2020
Mercury much less often.
lucd13
+1
Level 65
Aug 21, 2017
I felt so stupid getting only 12, but then I saw the average is 9 and I feel better. I like hard quizzes like this.
mahble
+1
Level 69
Aug 21, 2017
Hard? I got 20 on my first try.
RealTomHolland
+1
Level 58
Jun 3, 2019
Still hard, even if your limitless intellect tells you otherwise.
DonTheLamplighter
+3
Level 77
Aug 21, 2017
Hard for mere mortals. I got 13. It was difficult for me too. I hope I can be as smart as mahble when I grow up.
kiwiquizzer
+1
Level 63
Aug 21, 2017
Dang, I typed in Space Station, but not International.
yammer
+1
Level 60
Aug 21, 2017
Same here. Should be added surely.
catlover2496
+1
Level 43
Aug 21, 2017
Nice quiz!
philsa2
+1
Level 56
Aug 21, 2017
cool!
kalbahamut
+2
Level 79
Aug 21, 2017
I used to know well the names of Vega, Arcturus, Procyon, etc... some of them featured in fan-fiction authored by myself or my girlfriend in high school. We were both sci-fi geeks. And I studied Astronomy once a long time ago. Now, 20 years later, I only could remember 3 stars, but I got all the other objects.
mahble
+1
Level 69
Aug 21, 2017
ASTRONOMY NERDS FOR THE WINNNNNNNNNN!!!!!!!!!
kalbahamut
+3
Level 79
Aug 21, 2017
Are Halley's and other comets not brighter than some of these stars? Do these objects have to be visible from Earth at all times? I would think not since it is based on maximal brightness not averages. Though... then you open up the possibility of objects entering the atmosphere. I bet the asteroid that wiped out the dinosaurs was pretty damn bright for at least a short while.
kalbahamut
+1
Level 79
Aug 21, 2017
Nevermind. I looked it up and apparently Halley's Comet only has an apparent magnitude of 28
mahble
+1
Level 69
Aug 21, 2017
Right now it does - when it gets to the inner solar system its magnitude is lower than 6, making it a great comet. The brightest comets ever, though, have gotten all the way to -10 (Comet Ikeya-Seki).
mahble
+1
Level 69
Aug 21, 2017
And Halley's comet can get at least to -2.
kalbahamut
+2
Level 79
Aug 22, 2017
Then why isn't it on the quiz since it says it's according to maximal brightness?
PjotrL
+1
Level 69
Aug 21, 2017
If ISS is on there, couldn't we include satellites? https://en.wikipedia.org/wiki/Satellite_flare
ketchupkawawa
+1
Level 46
Aug 21, 2017
Ugh, I swear I typed in Aldebaran! 21/22. I'm seeing that Antares has a maximum magnitude of 0.6, though
sawmos
+2
Level 52
Aug 21, 2017
Would comets such as Halley's be acceptable or no?
kitshef
+2
Level 74
Aug 21, 2017
Definitely some more guidance needed here. I realize you can't do anything about long-period comets, but Halley's should be on there. And many of the meteor showers (e.g. Perseids) reach negative magnitudes regularly.
geographyisthebestsubject
+1
Level 46
Aug 22, 2017
I love this quiz! Creative...
sumguy
+1
Level 78
Sep 4, 2018
Holy crap, the ISS is extraterrestrial?! What planet did it come from???
eibi
+1
Level 73
Jan 23, 2020
The same as the moon :)
Sifhraven
+2
Level 67
Jan 2, 2019
The international space station is extraterrestial? Are you sirius??
WanHuangdi
+1
Level 70
Mar 24, 2019
I guess Polaris isn’t bright enough to make it on here.
CharlieZeb
+1
Level 65
May 12, 2020
I kinda remembered that Polaris was only a second magnitude star. There are nights when I have trouble finding it even using the Big Dipper.
Elan
+1
Level 62
Apr 25, 2019
How cool is it that we as humans have created one of the items on this list?
APHill
+1
Level 73
Jul 18, 2019
The fact that only half of the (reasonably knowledgeable) people on this site know the brightest star in the night sky depresses me.
Glacial
+1
Level 28
Apr 8, 2020
how is I.S.S brighter than the starrs lol
CharlieZeb
+1
Level 65
May 12, 2020
I got 12 and misspelled Arcturus (as Arcturas) so I missed that one. Good quiz.
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