Matt D From United States of America, joined Nov 1999, 9502 posts, RR: 50 Reply 2, posted (12 years 6 months 19 hours ago) and read 2271 times:
Saturn is not only NOT the biggest (it is the second biggest), but it is also the least dense of all the planets. It's density is only 60% that of water. So, given a big enough ocean, saturn would float on it like a partially deflated beach ball.
G-KIRAN From United Kingdom, joined Jun 2000, 736 posts, RR: 0 Reply 4, posted (12 years 6 months 19 hours ago) and read 2265 times:
Jupiter is the biggest although some suspect that there maybe a giant planet 10 bigger then Jupiter far out beyond Pluto.This would account for the strange irregular orbits of Neptune and Uranus.Initially they thought that Pluto was causing this,but they ruled it out because Pluto is very very small.
Matt D From United States of America, joined Nov 1999, 9502 posts, RR: 50 Reply 6, posted (12 years 6 months 15 hours ago) and read 2245 times:
Go Canada needs to Go Study some Astronomy. The rings of Saturn are nothing more than rocks and chunks of ice, with lots of space between the pieces (contrary to belief, the rings are NOT solid). If you were to take the entire mass of the rings, and lumped it all together, you would still come up with a body only about 2/3rds the size of the earths Moon.
Hardly enough to upseat Jupiter as the King of the Planets.
OO-VEG From Netherlands, joined Oct 2000, 1081 posts, RR: 1 Reply 8, posted (12 years 6 months 15 hours ago) and read 2240 times:
In mass and weight those rings of Saturn are not that interesting. BUT if you look at the space those rings take (no looking at how much empty space there is between those rocks), Saturn may be bigger.
However, I have heard there are more planets in the solar system with rings (not so much and beautiful as Saturn but they are still rings). Isn't Jupiter also one of those planets???? If so, that may make Jupiter the largest again.
GDB From United Kingdom, joined May 2001, 12957 posts, RR: 79 Reply 10, posted (12 years 6 months 13 hours ago) and read 2237 times:
Uranus has rings too, but they are vertical due to the planet being effectively turned on it's side, including the orbits of it's Moons.
Neptune has faint rings, seems to be a feature of gas giant planets.
Saturn's rings have been around for 'only' 3 million years, and will slowly ebb and erode away over many millions of years.
Go canada! From United Kingdom, joined Jun 2001, 2955 posts, RR: 11 Reply 12, posted (12 years 6 months 12 hours ago) and read 2230 times:
thats what i think they were getting at, Saturn may just be slightly larger when taking in the ring system of calculating planet size.
My Great-Uncle owns a local oberservatory, perhaps it is you who need to study your books?
I have studied astromony and have a GCSE in it and I think its a close call, if u just take mass of the planet then Jupiter win, however, i can see were the Weakest Link is coming from, its a shame you can not see beyond the trees-that makes it difficult for you to look at the planets.
It is amazing what can be accomplised when nobody takes the credit
DesertJets From United States of America, joined Feb 2000, 7719 posts, RR: 17 Reply 14, posted (12 years 6 months 10 hours ago) and read 2220 times:
That is just hogwash. The ring system is seperate from the planet... they are just orbiting satellites like the moon. Interstingly enough Saturn would float in water, its density is less than 1.
As for planet X, who knows. There is a lot of research going into objects beyond Jupiter. They are not really certain of the extent of the Kupier belt in terms of mass and size. There could be a brown drawf sitting out there too, or dark matter.
It still could be that Pluto is an escaped moon of Neptune or just a large Kuiper object, which would explain the eccentric orbit. Who knows.
Stop drop and roll will not save you in hell. --- seen on a church marque in rural Virginia
N863DA From United States of America, joined Sep 2004, 48 posts, RR: 6 Reply 16, posted (12 years 6 months 8 hours ago) and read 2205 times:
Ah yes... but don't you know that 'Go Canada!' has a GCSE in it (a qualification akin to a high-school diploma that you get at age 16) so he must know ALL about it. How foolish of elder people in their thirties (me not included) to think that they could compete with a GCSE!!!!
Samurai 777 From Canada, joined Jan 2000, 2457 posts, RR: 5 Reply 18, posted (12 years 6 months 7 hours ago) and read 2200 times:
Whoever did that TV show wasn't reading even basic astronomy.
Jupiter is 318 times the mass of Earth, while Saturn is a distant second, at 95 Earths. 95 Earths may seem heavy, but even though Saturn's diameter is about 130,000 km across, it's made largely of liquid helium surrounding a possible rocky core no larger than Earth. Helium, as we know, is a very light gas, ideal for filling ballons (or temporarily altering your voice for hilarious results, too). That's why Saturn's light enough to float in water.
All of the gas giants in our solar system have rings. Jupiter's ring is extremely diffuse and wasn't discovered until the Voyager 2 space probe took a picture of Jupiter being backlit by the sun in 1981. Uranus' rings weren't discovered until 1977, when a flying obervatory aboard a C-141 or a C-5 (can't remember which a/c type) saw stars dimming and brightening before and after Uranus passed in front of them. Neptune has a partial ring system. Saturn's rings are indeed largest and most beautiful by far and has very complex patterns. When Galileo Galilei discovered Saturn's rings through his incredible invention, the telescope, he initially thought Saturn had ears!
Go canada! From United Kingdom, joined Jun 2001, 2955 posts, RR: 11 Reply 24, posted (12 years 5 months 4 weeks 1 day 18 hours ago) and read 2166 times:
perhaps some people need to learn who to read before they ask questions...
when did I say that a GCSE is more important than a college degree? When, please inform me, since you know so much that should be easy for you.
No please inform me, come on you have made a judgement that I have said I know more about this than you all do, i simply laid out my basis that I have an elementary understanding of astromony as I am used to utter idiots jumping down peoples thoarts just because they are under thirty!
I simply said that I could see where the TV show was coming from.
Whilst i understand that a GCSE doesnt beat a college course, it is still useful and worthwhile and is probably more that some of the uneducated persons using this site have.
so I will answer most of the questions,sorry i havent done this instantly as I have uni exams to complete...i hope those who ahev used higher education can realise that I can not sit an a pc all day.
anyway here goes, by the way the answers are not in order and are the ones I can remember without looking up textbooks:
Nearest Star apart from the sun is Proxima Centauri, which is one part of the triple star Alpha Centauri, which is about 40 trillion km (25 trillion mi) from the earth.
ecliptic :its the apparent 'great circle' annual path of the sun, the name is because eclipses occur only when the moon is on or near this path.
Constellations-88 groupings of stars on the celst sphere
a parsec is a unit of measurement used for stellar distances, its a blend word of parallax and second
parallax:its the apparent displacement of the position of a celestial object on the cel sphere when you view it from two different postions.
An AU(asto unit) is the unti of distance used when measuring the obits and trajectories within the solar system
Aldebaran is in Taurus
The 3-star magnitude is darker, i Think
The brightest star apart from the sun is Sirius(-1.6)
Absolute magnitude is opposite to apparent magnitude, it indicates the brightness that a star would have if it were placed at a distance from the earth of 32.6 light-years.
declination is to do with the equator
i admit i cant answre all without looking, however, since I never asked for the questions and since i never said that a GCSE is better than a uni course I think I have done quite well.
I would like to see N 8 6 3 D A answer the rest of the questions since he seems to know soo much.
It is amazing what can be accomplised when nobody takes the credit
25 WN boy: What the brightest star in the sky is? My guess would be the sun. How many constellations there are? I believe TWA retired the last Constellation oper
26 Matt D: WNBoy: A+ for you. I hereby award you your unconditional GCSE. You are an intelligent person indeed. Who said that my quizzes were hard?
27 Flight152: WN boy- How many constellations there are? I believe TWA retired the last Constellation operating in passenger service in the early 1960's. I think Ma
28 Transactoid: Uggh...did nobody read my post? Obiviously someone simply didn't do enough research and formed the question incorrectly. *IF* it was an error, it will
29 LOT767-300ER: Wasent this guy asking what the capital of Virginia is on a diffrent post? And now he asks what the biggest planet is in our solar system? Air Taiwan
30 Samurai 777: CYKA - Glad you asked. Yes, I've been interested in astronomy. MattD asked us these: "But can you tell me, without looking it up:" I can, for moost of
31 SSTjumbo: Here's one to run across you guys. Jupiter has been occasionly classified as a star for some weird reason. Figured I'd tell you guys that if it wasn't