How is Io similar to Earth?
Instead, the early Earth may have worked more like Io, where heat flows to the surface through volcanic “pipes” in huge quantities. The moon is tugged so hard by Jupiter’s powerful gravity that it currently transports about 40 times more internal heat than Earth does despite being just 30 percent as wide as our planet.
What is Io gravity compared to Earth?
Io (moon)
| Discovery | |
|---|---|
| Volume | 2.53×1010 km3 (0.023 Earths) |
| Mass | (8.931938±0.000018)×1022 kg (0.015 Earths) |
| Mean density | 3.528±0.006 g/cm3 (0.639 Earths) |
| Surface gravity | 1.796 m/s2 (0.183 g) |
Is Io bigger than Earth?
Io is a moon of the planet Jupiter. It is Jupiter’s third biggest moon with a diameter of 3642 km, being slightly bigger than Earth’s moon. Io is the most volcanically active body in the Solar System.
How long is a year on Io?
42 hours
Io/Orbital period
Are Io volcanoes active?
Io has hundreds of volcanoes, many of which are active. It is one of the most volcanically active bodies in the Solar System. Io is heated up by the strong gravitational pulls of Jupiter on one side and the large moons Europa, Ganymede, and Callisto on the other.
Why is Io so hot?
So, why is Io so darn hot? The likeliest cause is tidal forces – the pulling and tugging of the moon by the gravity of Jupiter. Io orbits at only 421,000 km from Jupiter, making a full orbit in ~1.76 days. This distortion causes heat through friction, thus causing Io to stay hot (and partially molten).
How big is Io compared to the Moon?
Io is only slightly larger than Earth’s moon and about one-quarter the diameter of Earth itself. .
How does the planet Io orbit the Sun?
Out There. Io orbits the planet Jupiter, which itself orbits the Sun at a distance of 484 million miles (778 million kilometers). Gravitationally Tamed. Tidal Lock: Over 1.8 Earth days, Io rotates once on its axis and completes one orbit of Jupiter, causing the same side of Io to always face Jupiter.
How is Io related to other moons of Jupiter?
Io is caught in a tug-of-war between Jupiter’s massive gravity and the smaller but precisely timed pulls from two neighboring moons that orbit farther from Jupiter—Europa and Ganymede.
How big is the Earth compared to other planets?
The Size Of Earth Compared to Other Planets and Stars (and the Universe) They range in mass from a low of 0.075 solar masses (M ☉ -the mass of the Sun, approximately 1.99 × 1030 kilograms) to about 0.50 M ☉ and have a surface temperature of less than 4,000 K. 2MASS J0523-1403 is even smaller than Jupiter.