Dunes come in various characteristic shapes on Mars just as on Earth, providing clues about the prevailing wind direction. Monitoring them over time also gives us a natural laboratory to study how dunes evolve, and how sediments in general are transported around the planet.
Astrobee is “a compact one-foot-cube of a robot in development at NASA’s Ames Research Center in Silicon Valley. This robot is designed to work autonomously without astronaut supervision, or to be remotely operated by mission controllers.
Of course there are some rules, being the main one that Jupiter moons must be named after characters from Roman or Greek mythology who were either descendants or lovers of the god known as Jupiter (Roman) or Zeus (Greeks). More info in the Carnegie Institution for Science website:
Today is Red Planet Day! Red Planet Day is celebrated on November 28th of each year to commemorate the first launch of Mariner 4, the first spacecraft to obtain and transmit close range images of Mars. Here’s a fun Mars fact for you to celebrate:
Valles Marineris is the largest canyon in the Solar System. It’s so wide that from one side, the opposite rim would be below the curve of the horizon. From here, you’ll catch some spectacular blue sunsets in the normally red sky, which gets its color from the dust absorbing most of the blue light and the way sunlight is scattered by the atmosphere.
The Instrument Deployment Camera (IDC), located on the robotic arm of NASA’s InSight lander, took this picture of the Martian surface on Nov. 26, 2018, the same day the spacecraft touched down on the Red Planet. The camera’s transparent dust cover is still on in this image, to prevent particulates kicked up during landing from settling on the camera’s lens. This image was relayed from InSight to Earth via NASA’s Odyssey spacecraft, currently orbiting Mars.