Scientists believe that the gas giant might have a solid surface, but it isn’t something certain. Jupiter is basically a floating ball of gas and dust it doesn’t have a true surface. Some scientists consider Jupiter a failed star, while others dismiss this idea. Jupiter has a very similar composition to our Sun, being made out of 90% hydrogen and 10% helium. They played a significant role in our view of the Universe. These moons are often referred to as the Galilean Moons, in honor of Galileo Galilei. Galileo was also the man responsible for discovering Jupiter’s four biggest moons, namely, Io, Europa, Callisto, and the biggest moon in our Solar System, Ganymede. That man is none other than Galileo Galilei. However, one man can be credited for first observing Jupiter through a telescope. Because of this, no one can actually be credited for its discovery. The planet Jupiter was observed since ancient times due to its luminosity in the sky. Jupiter is the fourth brightest object in the sky Here are five facts about Jupiter that you might not know: 1. Since Jupiter is the biggest planet in our Solar System, it naturally captured our attention, even since ancient times. The giant proportions of Jupiter were meant to be, and any planet might have been in the same position as Jupiter if it formed earlier than it. If Jupiter was the first planet to be formed, it had the power to gather more gas and dust within itself, which led to its huge physical proportions.Īny planet would have been in Jupiter’s position if it formed first out of the interstellar medium. Gravity pulled the swirling gas and dust together and resulted in either the Sun or the planets that followed. The planets and the Sun formed through the swirling gas and dust from an interstellar medium, known as the solar nebula. Since it was the first planet to form, it had some advantages. It formed around one million years after the Solar System. Jupiter is so big because it is the oldest planet in our Solar System. You know the saying, there is always a bigger fish. You could fill the Sun with 1,000 Jupiter-sized planets, so that is how small Jupiter is compared to our Sun. Jupiter, on the other hand, has a mean radius of 69.911 km / 43.440 mi, and a diameter of around 142.984 km / 88.846 mi at the equator, and a diameter of about 133.708 km / 83.082 mi at the poles. It has a radius of 696.340 km / 432.685 mi and a diameter of 1.39 million km / 864.000 mi. Jupiter may indeed be the biggest planet in our Solar System, but is it bigger than our Sun? No, the gas giant pales in comparison to our Sun. Who knows, maybe in a parallel Universe, Jupiter ended up being the only star in our Solar System, and the Sun might have become a gas giant instead. Some scientists estimated that if Jupiter were more than 70 times more massive, it would have probably turned into a star rather than a planet. Jupiter has more than 11 times the diameter of Earth. It has a mean radius of 69.911 km / 43.440 mi, and its mass is equivalent to 318 Earth masses. So how big is Jupiter actually? Well, Jupiter has a diameter of around 142.984 km / 88.846 mi at the equator, and a diameter of about 133.708 km / 83.082 mi at the poles. This planet is so big that it would take around 1.300 Earths just to fill its volume! The biggest planet in our Solar System is the gas giant Jupiter.
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