Lost continent identified in Indian Ocean

The holiday islands of Reunion and Mauritius are all that remains of a small continent that's been hidden under lava for millions of years.

Other sunlike stars could be more hospitable to life

Most stars in the Milky Way that resemble our sun are more likely to host planets that support life than our own.

Plate tectonics observed on Mars

Mars may be experiencing plate tectonics - a phenomenon previously thought to be confined to Earth.

Is a new explanation needed for plate tectonics?

The Earth's wandering continents can't be fully explained by a layer of partially molten rock about 22 to 75 miles underground, NASA scientists say - something else must be contributing.