This image from the Navigation Camera on NASA’s Curiosity Mars rover shows wheel tracks printed by the rover as it drove on the sandy floor of a lowland called “Hidden Valley.” Curiosity has been crossing this valley en route to its destination, the base of Mount Sharp, the central mountain in the Gale Crater.
The image was taken during the 709th Martian sol – Curiosity’s 709th day on Mars – aka Earth date August 4, 2014.
It was one day before the second anniversary, in Earth years, of Curiosity’s landing on Mars.
Deborah Byrd created the EarthSky radio series in 1991 and founded EarthSky.org in 1994. Today, she serves as Editor-in-Chief of this website. She has won a galaxy of awards from the broadcasting and science communities, including having an asteroid named 3505 Byrd in her honor. A science communicator and educator since 1976, Byrd believes in science as a force for good in the world and a vital tool for the 21st century. "Being an EarthSky editor is like hosting a big global party for cool nature-lovers," she says.