I like astronomy, archaeology, photography, music and drinking a lot of tea.
I hate politics.
Something that annoys me: that I shall not respect the permanence, and to take me by what I'm not.
The best sign: VIRGO.
The worst: the health.
The best: adapt and know how to get ahead.
Welcome to my BLOG !
Thursday, February 12, 2015
Layered Rocks near Mount Sharp on Mars Image Credit: NASA, JPL-Caltech, MSSS
What caused these Martian rocks to be layered? The leading hypothesis is an ancient Martian lake that kept evaporating and refilling over 10 million years -- but has now remained dry and empty of water for billions of years. The featured image, taken last November by therobotic Curiosity rover, shows one-meter wide Whale Rock which is part of the Pahrump Hills outcrop at the base of Mount Sharp. Also evident in the image is cross-bedding -- rock with angled layers -- which were likely facilitated by waves of sand. Curiosity continues to find many layeredrocks like this as it continues to roll around and up 5.5-km high Mount Sharp.