Jupiter moon Io: 10-point look! (NASA)

Io is only slightly larger than Earth’s moon and about one-quarter the diameter of Earth itself. Io has a mean radius of 1,131.7 miles (1,821.3 km), reveals NASA. (NASA)

Io orbits the planet Jupiter, which itself orbits the Sun at a distance of 484 million miles (778 million kilometers). (Wikimedia)

The same side of Io always faces Jupiter. (Pexels)

Io is so volcanically active that it even has lakes of molten silicate lava on its surface. Average surface temperature is -202°F. However, its lava may reach 3,000°F.  (NASA)

Io’s very thin atmosphere is primarily sulfur dioxide, which on Earth is sometimes used to preserve dried food. (Pixabay)

The jury is still out on whether Io could support life, but that does not mean there is none there. (NASA)

 Io’s volcanoes are at times so powerful that they are seen with large telescopes on Earth. (NASA)

Io is stuck between the massive gravity of Jupiter and the pulls of the two neighboring moons that are Europa and Ganymede. (NASA)

Io doesn't have rings but it creates gaseous material around Jupiter. (NASA)

Io is 628.3 million km from Earth and 422,000 kilometers from Jupiter.  (NASA)