These were: P-waves, which oscillate back and forth similar to how a sound wave propagates; S-waves which oscillate up and ... on Mars to cover the surface in a global ocean between 0.62 to ...

Visit ancient Mars—a surprisingly temperate planet where snow or rain falls from the sky, and rivers rush down valleys to ...

But there’s only so much information that can be gathered by instruments operating at the bottom of a roiling ocean of air ... While Mariner 4’s up-close look at Mars was disappointing ...

The surface of Mars is extremely cold, irradiated, and desiccated. But at one time, the planet was much warmer and wetter, ...

Researchers have found new evidence for a massive subsurface ocean on Mars, again raising the possibility ... discrepancies in seismic velocity of these waves showed up at depths of 6.2 and ...

‘Earth’s surface has been continuously habitable since about 3.5billion years ago, but Mars’ surface evolved from more ...

A hypothetical picture of Mars 3.6 billion years ago, when an ocean may have covered nearly half the planet. The blue areas show the depth of the ocean filled to the shoreline level of the ancient ...

SEE ALSO: Scientists found huge beaches on Mars likely from a long gone ocean Curiosity took close-up pictures of a strange bumpy rock it discovered on Mars in March. Credit: NASA / JPL-Caltech ...