There’s less Mercury in the system. Scientists found that Mercury, the solar system’s smallest planet, is shrinking far ...

Mercury has been shrinking since it formed in our solar system's early days. New evidence, though, suggests it used to be ...

New estimates using the planet’s surface wrinkles show that our smallest planet is growing even smaller, at a faster clip ...

Mercury, the smallest and closest planet to the sun, is showing signs of contraction, with surface wrinkles suggesting it was ...

Telltale wrinkles that cover Mercury, the closest planet to the sun, suggest it was once a larger world that has shrunk in ...

Our solar system's smallest and innermost planet has been shrinking ever since its formation 4.5 billion years ago. Its hot ...

Add Yahoo as a preferred source to see more of our stories on Google. Pluto and Charon appear in a composite of natural-color images obtained by New Horizons space probe on July 13 and 14, 2015. Image ...