"What surprised us, at the end, was how effective this type of impact could be in explaining Mercury's unusual structure ...

Mercury has the shortest and fastest orbit around the Sun and experiences dramatic temperature changes as it rotates. It is a world of extremes. Explore facts about our solar system's fastest planet.

Turns out, it's as tough to drop inward into the inner solar system, as it is to head outward. The problem stems from losing ...

according to NASA. According to Star Walk, the next "planet parade" When is the 7 planet alignment? Mercury to join in late February. Mars, Jupiter and Saturn are frequently seen in the night sky.

a new study using observations from NASA's MESSENGER mission has indicated. Mercury is the smallest planet in our solar system and the closest to the Sun. It is rocky with a solid surface that is ...