For anyone curious about what it's like to stand on another planet, Earth offers a few convincing previews. Mars may be 140 ...

Mars is known for its barren desert landscape and dry climate. But two recent studies in the journals Nature and Science go beneath the surface,... The core of Mars looks like Earth’s. What makes the ...

Yeah, I can totally see it! How can you miss that? It’s right there. Clear eyes, full Earth, can’t miss. Wait, really? No of course not. Anyone who tells you that is either a liar or a hawk. Earth ...