First ever supercomputer simulations of Mars with a fully molten core could explain the Red Planet's unusual magnetic field.

Venus, the second planet from the Sun, has a thick, opaque atmosphere, preventing optical-based telescopes and orbiting space ...

The photo at left is an enhanced-color image of Neptune from the Hubble Space Telescope. At the right, that image is combined with one from the James Webb Space Telescope that shows greenish splotches ...