Mars madness! China, UAE to reach the Red Planet this week ahead of epic NASA rover landing

A new year begins on Mars as three space probes close in on the Red Planet

Astronomers have found evidence that it rains diamonds on Neptune and Uranus, that Mars' ancient water created opals, and that some exoplanets have clouds full of rubies and sapphires.

Jupiter’s Trojan Asteroids Offer Surprises Even Before NASA’s Lucy Mission has a Chance to Visit Them.