How much bigger is the planet Mercury than our moon?

Juggernaut314

From "http://btc.montana.edu/messenger/elusive_planet/fastfact_5.php" Mercury is the second smallest planet; only Pluto is smaller. Mercury’s diameter is 4879 km, while Earth’s is 12,756 km. In fact, Mercury is not much larger than our Moon, which has a diameter of 3475 km. Jul 03 09, 9:57 PM

ArlingtonVA

Mercury's mass is 4.6 times that of the moon. Mercury's mass is 3.3x10^23 kg, and the moon's is 7.35x10^22 kg. In terms of radius, Mercury is 2,440 km and the moon is 1,737. That is only 1.4 times larger. http://en.wikipedia.org/wiki/Mercury_(planet) http://en.wikipedia.org/wiki/Moon Jul 03 09, 10:15 PM

barnhill23

Mercury's volume is approimately 60.8 billion cubic kilometers, while our moon's volume is about 22 billion cubic kilometers. This means Mercury is about 2.76 times as large as the moon. Volume is only one way to measure size, but I think it works best in this case. Jul 03 09, 10:16 PM

Watchkeeper

You are right, barnhill23. Looking at a balloon and a cricket ball, one would say the balloon is bigger even though the cricket ball is more massive. Using the figures given by ArlingtonVA, the ratio of the radii is 2440km/1737km or 1.405. Raising this to the third power (volume is proportional to the cube of the radius) shows Mercury to be 2.772 times bigger than the Moon, in agreement with your approximate figure. Jul 04 09, 12:04 PM

Create a Free FunTrivia ID to add to, request more/new answers, or edit this entry

Mercury orbits the sun faster than any other planet. How many days does it take Mercury to complete one revolution? Which is the hotter planet, Venus or Mercury? In our solar system, which moon is closest to its planet (surface to surface), and which is the farthest from its planet? And how do these moons compare with ours as far as distance goes? Which planet besides Mercury has a hidden hemisphere? Which planet is described as orange (pluto, saturn, mercury, uranus) ?

1 Bigger than Jesus? In 1966, John Lennon joked that the Beatles were bigger than Jesus. But look who's had the last laugh as countless artists since then have referenced the big man in their lyrics. How many of these can you recognise? Heaven and Hell in Songs Average 10 Q glendathecat Oct 29 09 465 plays 2 Our Moon Here's a quiz about our only natural satellite: the Moon. There are some questions about phases, distances, features, and some other stuff. And it's not that hard. Good luck!!! Our Solar System Tough 10 Q Ace417 Mar 19 01 1305 plays 3 She's Got a Butt (Bigger Than the Beatles) From Cleatus T. Judd's song 'She's Got a Butt Bigger Than The Beatles'. It made fun of 'They've Got a Love Bigger Than the Beatles'. If you don't recognize his name, He sings 'How Do You Milk a Cow' and 'Grampa Got Runned over by a John Deere'. Judd, Cledus T. Very Difficult 5 Q FullHOuseGal Jan 27 01 399 plays