As the Curiosity rover explores its way around Mars, it isn’t only looking down at the martian rocks and regolith — it is also looking up at the martian sky. Like Earth, Mars has its own seasonal ...

Look carefully at these photos from Mollie Holleman. Shot from Hallandale, you can see the silky streaks of what appears to be a rainbow visible high above. It’s cloud iridescence, and it’s often ...

Mars will probably become the first planet in this Universe the human race will ever visit, and only then will we begin to get a true sense of the place. Because, even if we feel like we know a lot ...

New images captured by NASA's Curiosity rover show colorful clouds in the sky over Mars. The images were captured by the rover's Mastcam, which NASA's Jet Propulsion Laboratory compared to the rover's ...