Impacts by space objects have obscured some of the evidence of the planet’s contraction over the past 4.5 billion years.

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

A new study reveals Mercury has lost up to 14.5 miles of its diameter since birth. That might not seem like much until you ...

A Massachusetts Institute of Technology building was closed through Aug. 30 after a graduate student was said to have created an unauthorized, highly toxic chemical compound. The school’s Aug. 29 ...

The solar system's smallest planet has gotten smaller still.

Add Yahoo as a preferred source to see more of our stories on Google. A Massachusetts Institute of Technology building was closed through Aug. 30 after a graduate student was said to have created an ...

The surface of Mercury is filled with craters, ridges and steep cliffs. Over billions of years, as the planet's interior ...

Enhanced animatronic flying monkeys, new pyrotechnics, "Glinda Glitter" and scented apples will be added to the new version of the classic film.

A Massachusetts Institute of Technology building was expected to remain closed at least through Sunday after a graduate student was said to have created an unauthorized, highly toxic chemical compound ...