The core of the Red Planet may be filled with sulfur. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. New experiments have shown that the core of ...

New experiments have shown that the core of Mars formed much faster than Earth's core, thanks to molten iron and nickel sulfides seeping down through solid rock and into the center of the Red Planet.

One summer night in 1877, American astronomer Asaph Hall was looking through his telescope in Washington, D.C. Mars was at its closest point to Earth in its orbit, and Hall had one question on his ...