The ripples suggest that the lake was free of ice at one point.

It’s been a while since we’ve heard about that made-up rogue planet Nbiru, which some believed would pop-up to collide with or otherwise majorly disrupt Earth’s orbit, spelling doom for all ...

Why it's so special: These odd, fan-like features on the surface of Mars are geysers of gas and dust near the planet's south pole that are visible only in springtime on the Red Planet. This image ...