Ganymede is the largest and most massive moon in the Solar System. Its diameter of 5,268 km is 0.41 times that of Earth, 0.77 times that of Mars, 1.02 times that of Saturn’s Titan (Solar System’s second largest moon), 1.08 times Mercury’s, 1.09 times Callisto’s, 1.45 times Io’s and 1.51 times the Moon’s.
What is the biggest moon in the universe?
Jupiter’s moon Ganymede is the largest satellite in the solar system. Larger than Mercury and Pluto, and only slightly smaller than Mars, it would easily be classified as a planet if were orbiting the sun rather than Jupiter.
What are the top 5 largest moons?
| Largest moons in the Solar System (diameter over 1,000 km) | ||
|---|---|---|
| Moon | Planet | Mass (planet = 1) |
| Ganymede | Jupiter | 7.80 x 10–5 |
| Titan | Saturn | 2.37 x 10–4 |
| Callisto | Jupiter | 5.67 x 10–5 |
What are the 4 largest moons?
The Galilean moons (or Galilean satellites) /ɡælɪˈliːən/ are the four largest moons of Jupiter—Io, Europa, Ganymede, and Callisto. They were first seen by Galileo Galilei in December 1609 or January 1610, and recognized by him as satellites of Jupiter in March 1610.
How big is Titan vs Earth?
Frequently described as a planet-like moon, Titan is 50% larger (in diameter) than Earth’s Moon and 80% more massive. It is the second-largest moon in the Solar System after Jupiter’s moon Ganymede, and is larger than the planet Mercury, but only 40% as massive.
What is the prettiest moon?
This week, we present 10 of our solar system’s most marvelous moons.
- Retrograde Rebel: Triton.
- Cold Faithful: Enceladus.
- Volcano World: Io.
- Yin and Yang Moon: Iapetus.
- A Double World: Charon and Pluto.
- 8. ” Death Star” Moon: Mimas.
- Don’t Be Afraid, It’s Just Phobos.
- The Moon We Know Best.
What is the loneliest planet in the universe?
The loneliest planet: Astronomers find ‘young and unattached’ Jupiter-like world in our own solar neighbourhood. Astronomers have discovered a young, nomad planet floating in the emptiness of space. The planet, dubbed 2MASS J1119–1137, is around 10 million-years-old – practically a baby on a galactic time scale.
Is Pluto larger than the moon?
Pluto is smaller than Earth’s moon. This dwarf planet takes 248 Earth years to go around the sun. … Its largest moon is named Charon (KAIR-ən). Charon is about half the size of Pluto.
What is the biggest thing in the universe?
The largest known structure in the Universe is called the ‘Hercules-Corona Borealis Great Wall’, discovered in November 2013. This object is a galactic filament, a vast group of galaxies bound together by gravity, about 10 billion light-years away.
What are Jupiter’s 5 biggest moons?
ESA Science & Technology – Jupiter’s largest moons
From top to bottom, the moons are Io, Europa, Ganymede and Callisto. Europa is almost the same size as Earth’s moon, while Ganymede, the largest moon in the Solar System, is larger than planet Mercury.
Does Jupiter have 79 moons?
There are 79 known moons of Jupiter, not counting a number of moonlets likely shed from the inner moons.
What are Jupiter’s largest moons called?
Ganymede. Ganymede is the largest satellite in our solar system. It is larger than Mercury and Pluto, and three-quarters the size of Mars.
Will Jupiter’s moons collide?
Jupiter Moons Now Up To 79 After 10 More Confirmed, Including 1 That May Collide With Others. Jupiter now has 79 moons after 10 more have been confirmed, and according to astronomers, one of them may be on a collision course with other Jupiter moons. Jupiter has been described as a miniature solar system by itself.
Can we breathe on Titan?
Another theoretically possible means to become airborne on Titan would be to use a hot air balloon-like vehicle filled with an Earth-like atmosphere at Earth-like temperatures (because oxygen is only slightly denser than nitrogen, the atmosphere in a habitat on Titan would be about one third as dense as the surrounding …
Is there gold on the moon?
There is water on the moon … along with a long list of other compounds, including, mercury, gold and silver. … Turns out the moon not only has water, but it’s wetter than some places on earth, such as the Sahara desert.
Is there gold in space?
As it turns out, there’s a giant asteroid that contains enough gold and other metals to make everyone on Earth a multibillionaire. And NASA uses gold to protect spacecraft from radiation. With all the gold out in space, extraterrestrial mining is a real possibility.