It takes high pressure and temperatures of about 150 million degrees to get atoms to combine. (sciencedaily.com)
The core is rich in iron and the atmosphere is rich in oxygen, and between them is the entire range of pressures and temperatures on the planet. (sciencedaily.com)
Using laboratory experiments to study these conditions is difficult, as it is very hard to recreate the extreme pressures and temperatures found on ice giants, researchers say. (sciencedaily.com)