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Solar System Quiz

Name the 25 biggest things in the solar system. For instance, a planet or a moon.
Quiz by Quizmaster
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First submittedJuly 24, 2011
Last updatedSeptember 1, 2018
Times taken63,779
Rating4.86
5:00
Enter name of object here:
0
 / 25 guessed
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Mass
Name
1.99 x 1030 kg
Sun
1.90 x 1027 kg
Jupiter
5.68 x 1026 kg
Saturn
1.02 x 1026 kg
Neptune
8.68 x 1025 kg
Uranus
5.97 x 1024 kg
Earth
4.87 x 1024 kg
Venus
6.42 x 1023 kg
Mars
3.30 x 1023 kg
Mercury
Mass
Name
1.48 x 1023 kg
Ganymede
1.35 x 1023 kg
Titan
1.08 x 1023 kg
Callisto
8.93 x 1022 kg
Io
7.35 x 1022 kg
Moon
4.80 x 1022 kg
Europa
2.15 x 1022 kg
Triton
1.67 x 1022 kg
Eris
Mass
Name
1.31 x 1022 kg
Pluto
4.00 x 1021 kg
Haumea
3.53 x 1021 kg
Titania
3.01 x 1021 kg
Oberon
3 x 1021 kg
Makemake
2.32 x 1021 kg
Rhea
1.97 x 1021 kg
Iapetus
1.59 x 1021 kg
Charon
+3
level ∞
Jul 23, 2011
Updated the quiz to reflect recent discoveries. Thanks to acer9199!
+2
level ∞
Mar 5, 2014
And updated again.
+11
level 56
Jul 13, 2018
Confused? You mean you completely got the name wrong :)
+1
level 65
Jul 30, 2018
A capital i looks very much like a lowercase L. I only learned how to spell it during Latin class last year, but have known about the moon itself for years.
+3
level 67
Jul 30, 2018
But why would a moon start with a lowercase letter?
+1
level 33
Jul 24, 2011
23/24 missed Haumea
+1
level 26
Dec 14, 2014
same but i missed iapetus
+3
level 55
Jul 24, 2011
why isn't earth 100%?
+26
level 76
Feb 5, 2013
hey, not everyone taking this quiz is necessarily from your planet. You geocentrist! Get over yourself.
+9
level 30
Mar 1, 2014
eeya emm pherome eris! thinnke befoare eyou speke (souray iff eye speele bwad, emm pherome eris wee speke erishian)
+5
level 44
Mar 20, 2014
Klaatu barada nikto!
+4
level 28
Oct 9, 2016
Sadferyutines zextysaq cyaskiom neri v boper ctytykid wderfygjad kerysefri frvuvnisy keklesykj akesrytanike!
+4
level 43
Dec 10, 2016
Lol you open the door to that Kalb.
+1
level 58
Jul 30, 2018
eep opp ork ah ah
+1
level 56
Sep 15, 2018
Zzvo glexxhebrraeah plaaafrexna nahsZ. GgsAwo. Jhuytlkipcć. Yëðjæzzň çaaa njdecwrom.
+1
level 28
Jan 31, 2019
oo ee, oo ah ah, ching chang, walla walla bing bang (I wanted in on the fun.)
+1
level 59
Mar 20, 2014
Because there are always some idiots that can't remember to type "Earth" and submit the answers they have (presumably none).
+2
level 54
Mar 20, 2014
Can't be none, people without any correct answers aren't counted in the stats
+4
level ∞
Mar 20, 2014
@ponnuki. This is true.
+4
level 55
May 11, 2014
I forgot the moon. Probably because it doesn't have a cool name like "Haumea."
+1
level 41
Nov 1, 2014
burntfrost, the moon has a name: Luna
+1
level 36
Jan 23, 2017
@burntfrost i did the same but writ luna
+4
level 75
Feb 16, 2017
In the cool name department, my vote is for Makemake!
+3
level 54
Jul 30, 2018
@LibertarianAGC "Luna" just means "Moon" in Latin.
+3
level 45
Jun 28, 2018
Maybe someone who doesn't speak english took this quiz. Most languages have the same word for Jupiter, Saturn, Mars, etc. but very different names for earth.
+3
level 18
Aug 4, 2011
You accept "Sol" for Sun, but not "Luna" for Moon or "Terra" for Earth? Oh yes, Earth is also Sol III or Sol D, Moon is Terra I or Sol IIIa (Wikipedia it if you don't believe me :P ) -- But then I guess you could describe any planet as Sol ... ;)
+8
level 61
Mar 25, 2014
Why wouldn't you just go with the common names? You don't get extra credit points for using other accepted names.
+2
level 66
Feb 29, 2016
This should be at the top of every quiz
+1
level 58
Apr 9, 2016
Since there are multiple moons on here, just saying "moon" could theoretically be any of them. Every other moon on this quiz accepts it's proper name. Luna should at the least be accepted, if not the only correct answer.
+1
level 53
Apr 21, 2017
@ctleng76 +1
+1
level 67
Nov 29, 2018
"Luna" could be accepted as an answer, but capital-M "Moon" is the official English-language name for Earth's biggest natural satellite.
+1
level 44
Jan 6, 2012
Poor Pluto, got demoted...
+3
level 15
Sep 20, 2012
Eris is bigger. Never had the glory of potentially being a planet. I feel worse for him.
+4
level 76
Feb 5, 2013
Eris is a girl's name
+2
level 51
Apr 9, 2016
I have a friend named Eris. He's a guy. Try telling him he's got a girl name.
+2
level 76
Apr 13, 2016
If I ever meet him I will.
+1
level 24
Oct 27, 2012
Got all of them except for Titania! Thought it was the same as Titan.
+1
level 20
Nov 13, 2012
Got all of them as well...guess me being a total mythology nerd pays off..
+3
level 50
Dec 3, 2012
The masses are shown but under the title "weight". Can that please be changed? Your friendly neighborhood astrophysicist.
+1
level 75
May 20, 2015
Seconded, by your friendly neighborhood civil engineer. Mass is the correct term in this situation.
+2
level 48
Oct 26, 2015
Especially since all of the bodies in the list have the same weight, namely, zero (since they are all in free fall).
+7
level 75
Jan 4, 2017
Fourthed by me. (Actually I have no knowledge in this area at all, I just wanted to sound smart.)
+3
level ∞
Dec 8, 2016
Finally fixed!
+1
level 15
Dec 7, 2012
missed titania and oberon!!
+3
level 40
Dec 26, 2012
I missed... THE MOON! That's it... I'm gonna stand in the corner with a dunce hat on my head.
+1
level 76
Feb 5, 2013
Aw... no Ceres or Charon? and I thought I had guessed Callisto... maybe I spelled it wrong... come to think of it I think I might have typed in Callisa. As skinny as Callista Flockhart is I doubt she makes it on any list of biggest things in the solar system, though...
+1
level 15
May 16, 2013
24/24 It was really tough
+1
level 7
Jun 21, 2013
who knows this kind of stuff
+7
level 51
Apr 21, 2017
Neil de Grasse Tyson
+1
level 63
Feb 10, 2018
Or any other astronomer.
+1
level 54
Nov 29, 2013
missed Haumea
+1
level 77
Mar 17, 2014
Got 23, missed Iapetus... should have tried all of Saturn big moons instead of trying to remember Sedna ;).
+1
level 58
Mar 20, 2014
Only missed Makemake, but that is because I could only come up with 90377 Sedna (or just Sedna). When I looked it up, it said it was 3x10^21 kg. When I looked up Makemake, it said the mass was 4x10^21 kg. You should probably make Sedna an accepted answer, or better yet, your quiz seems to be a little off based on a list I found. http://www.suberic.net/~dmm/graphics/astro/size.html I think it's just a couple of the last 5 or so that are different. Also, Luna should be accepted for Moon.
+2
level 61
Mar 21, 2014
I could make a humorous comment to the previous observation but I will resist as I am sure the writer did not intend for the comment to be read in anything but a well-intended way.
+1
level 34
Oct 17, 2015
Nice quiz. If you like Solar system quizzes try this one too. http://www.jetpunk.com/user-quizzes/161412/10-largest-trans-neptunian-objects
+1
level 33
Jan 19, 2016
You forgot Pluto's moon, Charon, which is actually larger than Pluto itself, believe it or not.
+4
level ∞
Jan 20, 2016
No it's not
+1
level 67
Nov 29, 2018
It would be a physical impossibility for a more massive object to orbit around a less massive object (or for their barycenter to be close enough to the less massive object for you to reasonably say that the more massive object is orbiting around it, if you want to get technical.)
+1
level 76
Apr 9, 2016
Can you accept Japetus? It's a rare alternate spelling, but for some reason it's the one I knew
+1
level 77
Apr 9, 2016
Almost missed it again today because of that (in French, it's called "Japet").
+1
level 67
Nov 29, 2018
Same here. I blame Arthur C. Clarke, because that's how he spells it in the novel of 2001: A Space Odyssey (in which Iapetus features very prominently.)
+1
level 65
Apr 9, 2016
Did I really forgot Mars??? Hell yeah!!!
+1
level 28
Apr 9, 2016
Couldn't beleve 1% of the people don't know what planet we are living!
+1
level 78
Apr 9, 2016
Maybe those 1% live on Mars.
+1
level 28
Apr 11, 2016
Or floating in space! ;)
+1
level 58
Apr 9, 2016
Accept Luna for Moon?
+1
level 72
Apr 9, 2016
Weighing the planets in kilograms is a novel approach. Does that mean that Jupiter gets bonus weight since it's own gravitational field is stronger than Earth's? And I never would have guessed that a big ball of fire would have any weight at all.
+1
level 77
Apr 9, 2016
Indeed, it should read "Mass" instead of "Weight".
+1
level 76
Apr 10, 2016
Something has to be on fire for there to be a big ball of fire. Fuel has weight. Hydrogen might not weigh very much in small amounts but try putting a few trillion cubic meters of it in a can and weighing it in a vacuum...
+1
level 77
Apr 11, 2016
I don't think you get the point. Weight is a force, an expression of gravity for objects bound to a celestial body. It is proportional to mass but it is not mass itself... an usual and understandable confusion, but still a mistake.
+1
level 76
Apr 13, 2016
I know what weight is. I took high school Physics (and college Physics). If Jerry is trying to make the point that you are, then he articulated it very poorly. A giant ball of fire definitely has weight. And mass. These terms are often used interchangeably in layman's parlance.
+1
level 76
Apr 13, 2016
It's also not a novel approach at all to measure celestial bodies' mass (weight) in kilograms.
+1
level 77
Apr 14, 2016
I'm not quite sure, but I think he was trying to be witty about that, yes. Anyway, weight (a force) is not measured in kilograms but in newtons, so there is a mistake.
+1
level 76
Nov 29, 2018
just click on the link, dude
+1
level 67
Nov 29, 2018
The point they're making is that mass and weight are not the same thing. Mass is a property inherent to matter, and is a property of an object independent of any other object or force. Weight can only be measured in terms of an object's relation to another object (specifically, the gravitational pull between them.) Something that weighs 100 pounds would only weigh about 38 pounds on the surface of Mars, but something with a mass of 100 kg would still have a mass of 100 kg. You could only say that something like the Sun weighs a certain amount if you qualified it by saying something like "...if it were on the surface of the Earth."
+1
level 67
Nov 29, 2018
And yes, kilograms are frequently used for weight in layman's parlance, but that's only because laymen are nearly always talking about the weight of things on the Earth's surface. There, something with a mass of 1 kg will weigh 2.2 pounds, because the distance to Earth's center of mass is assumed. When talking about celestial objects, that doesn't work. Weight only means anything if you specify where.
+1
level 76
Jan 12, 2019
I know what mass and weight are. Again, click on the link.
+7
level 60
Apr 9, 2016
Donald Trump's ego is missing.
+2
level 59
Dec 9, 2016
Don't worry, it will keep getting more and more massive. At the same time it has to be contained within Donald Trump's body. That's why eventually the ego gets so dense it collapses into a black hole and gobbles up all of Earth. Then it will easily make it into this quiz.
+1
level 38
Apr 9, 2016
Get Iapetus but miss Pluto. Time to lie in the closet with a paper bag
+1
level 76
Apr 10, 2016
Aren't there many objects similar in size to Pluto in approximately the same orbit or a little further distant? So many in fact that they typically just have boring letter/number designations instead of proper names? And this is one of the reasons that Pluto was given a new designation "dwarf planet" since keeping it as a planet would require classifying these other objects as such?
+1
level 54
May 22, 2017
Eris, Haumea and Makemake in this quiz are of that group; Sedna and Quaoar are others that did not make the cut.
+1
level 37
Apr 11, 2016
And yet I miss the moon :(
+1
level 60
Jun 8, 2016
Me too. :( I'm sorry moon - we still love you.
+1
level 57
Apr 14, 2016
If ever in doubt, type in as many random legendary greek/roman characters as you can. Philosophers sure love their myths.
+1
level 28
Apr 14, 2016
I agree because most of the names were named by Roman/Greek god/goddesses. :)
+1
level 55
Apr 23, 2016
It's funny that more people know/remember Pluto, than Neptune, Uranus, Mercury and at least our own moon. Not really surprising though
+1
level 60
Jun 8, 2016
All pity. That poor little ex-planet.
+1
level 44
Dec 9, 2016
I'm surprised as to how much people didn't get Titania! This is one of my favourite moons in the solar system.
+1
level 67
Dec 9, 2016
I know it's been mentioned before, but Luna should be an acceptable type-in for Earth's moon. It makes sense to just call it "the moon," but it does have a name in astronomy.
+1
level 67
Nov 29, 2018
Yeah, but in astronomy, that name is "the Moon." Luna should be (and is now) an acceptable type-in, though.
+5
level 73
Dec 9, 2016
"Your mom" seems to be missing?
+1
level 60
Dec 9, 2016
LOL!!!
+1
level 36
Dec 10, 2016
THats a good one
+2
level 68
May 15, 2018
Good thing I hit Ctrl+F before I made this joke myself...
+1
level 36
Dec 10, 2016
HEY MOON IS NOT CALLED MOON IT IS CALLED LUNA USE ITS PROPER NAME
+1
level 67
Apr 21, 2017
MOON is called MOON, it is the pedants that like to call everything by the Latin name that just can't get it. You probably call the Sun 'Solis' and you don't say Sunrise but " it's a lovely Solis Ortus this morning"........ get a life.
+1
level 67
Nov 29, 2018
Bring it up with the International Astronomical Union. Their official name for the Moon is "the Moon."
+1
level 49
Dec 10, 2016
How come only 98% of the people got the sun when there is a picture of it there?
+4
level ∞
Dec 10, 2016
Terra and Luna will work now for Latin language enthusiasts.
+1
level 33
Feb 14, 2017
If "Terra" is a correct answer, why isn't "Tellus" likewise?
+1
level 25
Feb 20, 2017
4:20 left
+1
level 48
Mar 3, 2017
Makes you realise how uncreative we were with the naming of our own moon.
+1
level 67
Apr 21, 2017
I think creative enough. It is the name MOON that has given us the broad term for a satellite that orbits a planet. You might as well say that SUN is not very creative.
+1
level 33
Dec 5, 2017
Or even worse, Sol
+1
level 54
Dec 11, 2018
Sowulo (sōwilō)
+1
level 49
Apr 22, 2017
Well, many moons ago {hehe!} they thought we had the only one. Then astronomer guys started finding more and the next thing you know it seems everybody had a moon. Blame those guys who should have come up with some other name centuries ago.
+1
level 77
May 15, 2018
Well, Kepler already called them satellites, which is the best term to call them. I have no personal problem with moons though.
+1
level 67
Nov 29, 2018
Not really! We only call the satellites around other planets "moons" because of our Moon in the first place.
+1
level 45
Apr 20, 2017
A forgot earth *face palm* 🤦‍♀️
+1
level 27
Apr 21, 2017
You also forgot how to spell 'I' :)
+1
level 39
May 19, 2017
I can't believe there's an object in the solar system called "Makemake"
+1
level 28
May 20, 2017
dear lapetus, you can stop existing now, Because I hate you and all you do is mess with my almost 100% correct answers in this quiz
+1
level 22
Jun 10, 2017
I did so bad. I could get barely any so I just started listing off greek/roman gods and goddesses. rhea, iaeptus, eris...
+2
level 45
Jul 18, 2017
Nats as well add "Russia"
+1
level 25
Jul 20, 2017
got all right
+1
level 42
Nov 5, 2017
💯 with 2:13 to spare.
+1
level 33
Dec 4, 2017
half of these nobody's heard of
+1
level 33
Dec 5, 2017
Anyone notice the drop off from the planets to the moons and other asteroids?
+1
level 43
Jan 24, 2018
Yaaay more astronomy!! (100%, 2:33 remaining) <3 <3
+1
level 35
Mar 24, 2018
Kept trying Ceres then realized it was asking for the most MASSIVE bodies in the solar system rather thant those with the largest diameter. Hence Eris is counted as larger than Pluto - it has a smaller diameter but a larger mass.
+1
level 24
Mar 30, 2018
Yay! 100%
+1
level 35
May 15, 2018
Anyone else know all this stuff from warframe?
+4
level 64
Jul 30, 2018
Make Makemake great again!
+2
level 78
Jul 30, 2018
Pink Floyd's Astronomy Domine helped with: Jupiter and Saturn, Oberon, Miranda and Titania, Neptune, Titan, Stars get frightened..........
+2
level 34
Jul 30, 2018
99% guessed sun. What about that 1%?
+1
level 66
Jul 30, 2018
They're praying for rain.
+1
level 61
Jul 31, 2018
Poor Ceres! Queen of the Asteroid Belt, but not on this list.
+1
level 34
Aug 14, 2018
13/25
+4
level 53
Jan 16, 2019
You should accept "Greenland" for Earth, since it is part of Denmark.
+1
level 26
Jun 17, 2019
The heck
+1
level 65
Mar 20, 2019
lapetus doesn't work. I typed it several times...
+1
level 22
Apr 12, 2019
pLUtO IsN't A pLaNeT
+1
level 19
May 10, 2019
all with 3:30 left
+1
level 26
Jun 17, 2019
I was surprised Ceres wasn't on here; it's the fifth dwarf planet
+1
level 25
Jul 2, 2019
No Ceres?