In a recent, most important U.S. planetary report of the decade, scientists confirmed that NASA had launched a flagship campaign on Uranus, the undisputed planetary system of our solar system near its cousin Neptune. And for a good reason: understanding how and where they form has a direct impact on the evolution of our planet.
The Earth was built about 4.6 billion years ago due to a violent process in which thousands of more minor planets over 100 miles (62 miles) in diameter collided and formed a few million years ago. Scientists speculate that the Earth may have lost much of its water to the atmosphere because of the high temperatures that result from this process.
Our water instead came about in a short time, nearly four billion years ago, when the magnificent migration of the major planets of our solar system – Jupiter, Saturn, Uranus, and Neptune – spread massive asteroids and comets everywhere. Many of these bombs, including water and organic matter – are essential ingredients of life as we know them.
Yet apart from the existence of such a complex and controversial era, we do not know exactly how the giant planets formed, originated, and originated.
What is the difference between gas giants and ice giants?
Jupiter and Saturn (gas giants) and Uranus and Neptune (ice giants) represent two different planets. Gas giants are mainly composed of hydrogen and helium; ice giants, on the other hand, contain those substances and heavy metals such as oxygen, nitrogen, carbon, and sulfur. While their cores formed from the rock-metal children’s planets rapidly grew on the outer disk of objects around the Sun, their outer layers accumulated differently.
Since Jupiter and Saturn were the first and most giant planets to form, they took up a large portion of the hydrogen and helium solar disk to create their galaxies and outer space. This left the young hats of Uranus and Neptune with as many ice cubes as water and ammonia and a small hydrogen and helium atmosphere.