CAPE CANAVERAL, Fla, May 7 (Reuters) - New results from NASA's now-defunct Messenger spacecraft show Mercury's magnetic field switched on about 4 billion years ago, scientists said on Thursday.

Mercury doesn't give up its secrets easily. The smallest planet in our solar system is also one of the most extreme—a sun-scorched, metal-rich world with a puzzling magnetic field and lavas unlike ...

BepiColombo is slowly uncovering more and more fun facts about Mercury as it continues its preliminary mission. One of the more interesting things found so far is a magnetic "chorus" that appears ...

The BepiColombo spacecraft may have only made rapid flybys of Mercury, but it is already helping to unravel mysteries surrounding the closest planet to the sun. In 2026, a European Space Agency ...

Add Yahoo as a preferred source to see more of our stories on Google. For decades, scientists believed lithium might be hiding in Mercury’s ultra-thin atmosphere, or exosphere, but every attempt to ...

LOS ANGELES - Despite its proximity to the sun, portions of Mercury appear to be covered in ice, scientists said Thursday after analyzing 20,000 new images of the solar system's smallest planet. The ...

Mercury, the smallest and innermost planet in our solar system, may be home to a dazzling secret hidden beneath its scorched surface—a diamond layer up to 11 miles thick. A groundbreaking study, led ...