How much smaller is mercury than earth

The reason we think this is that the spacecraft Mariner 10 found that Mercury has a magnetic field, similar to Earth's but not as strong. We think that Earth's magnetic field is due to its molten core, so that means that Mercury's must also be due to a molten core. Does Mercury have rings or any moons around it? No, Mercury doesn't have either rings or moons. Neither does Venus! I think that this is because the planets are fairly close to the sun, and the sun's strong gravity would interfere with anything in orbit around those two planets.

Good question! ALL the other planets have moons and some have rings! When Mercury is directly in line with the sun and Earth, will it affect us on Earth? Mercury is so small with respect to the sun that no one would notice Mercury's tiny shadow. Do Mercury and Venus ever get between Earth and the sun? If so, what is it called? Yes, this happens — it is called a "transit. A transit of Mercury happens about 13 times in years.

Transits by Venus are more rare. There were two back in and The next ones you and I may see — they are coming up on June 8, , and June 6, Lesson plans, interactive activities, and other resources to help students learn about and explore our solar system.

Create a List. List Name Save. Uranus is four times wider than Earth, wait, that sounds even dirtier, well… moving on to Neptune. Neptune is the fourth-largest planet in the Solar System. Neptune has a diameter of The mass of Neptun is equivalent to The diameter of Neptune is four times wider than the diameter of the Earth. Pluto has a diameter of around 2. Pluto has only Charon has 9. In comparison to Earth, the Moon has only 1. The Moon is about one quarter the size of Earth, and it would take around 50 moons to fill the Earth.

Our Moon is, though, the largest moon in the Solar System relative to its parent planet. How Big is the Earth? Earth vs Venus Venus is the sixth-largest planet from the Sun. Earth vs Saturn Saturn , which is the second-largest planet in our Solar System, is a monster in comparison to Earth.

Earth vs Jupiter The true giant in our Solar System, namely the planet Jupiter , has a diameter of around Earth vs Uranus The icy giants, Uranus and Neptune , are a bit similar in size and mass; however, they are both several times bigger than our Earth.

Earth vs Neptune Neptune is the fourth-largest planet in the Solar System. Did you know? In fact, Mercury is closer in size to our Moon than to Earth. In case you're wondering, though, Mercury is still significantly larger than the dwarf planet Pluto: Pluto's equatorial diameter is just 2, km, about half Mercury's width. The largest planet in our solar system by far is Jupiter, which beats out all the other planets in both mass and volume.

Jupiter's Great Red Spot, even at its current diminished size , spans 15,, just over a full Earth diameter. Despite its bulk, though, Jupiter has a fast rotation period of just 10 hours! Community Leaders: Notable Astronomers. By: Richard S. Wright Jr. November 9, Celestial Objects to Observe.