The Sun sets differently on Mars. Part of that is due to its distance from the star (an average of 142 million miles versus ...

Harmony of the Seas offers loads of top-deck attractions, a variety of cabin styles and ample dining options. Here's what ...

The European Southern Observatory (ESO) has released a stunning 80 million-pixel image of the star cluster RCW 38, as captured by ESO's Visible and Infrared Survey Telescope for Astronomy (VISTA), ...

Curiosity, a set of NASA 's robotic "eyes" on the Red Planet, recorded 16 minutes of so-called noctilucent clouds flying ...

NEW YORK (AP) — A neutrino detector submerged in the Mediterranean Sea has sniffed out the most energetic ghost particle yet, ...