NASA’s Perseverance Rover Arrives at Delta for New Science Campaign
hubie writes:
After collecting eight rock-core samples from its first science campaign and completing a record-breaking, 31-Martian-day (or sol) dash across about 3 miles (5 kilometers) of Mars, NASA's Perseverance rover arrived at the doorstep of Jezero Crater's ancient river delta April 13. Dubbed "Three Forks" by the Perseverance team (a reference to the spot where three route options to the delta merge), the location serves as the staging area for the rover's second science expedition, the "Delta Front Campaign."
"The delta at Jezero Crater promises to be a veritable geologic feast and one of the best locations on Mars to look for signs of past microscopic life," said Thomas Zurbuchen, the associate administrator of NASA's Science Mission Directorate in Washington. "The answers are out there - and Team Perseverance is ready to find them."
The delta, a massive fan-shaped collection of rocks and sediment at the western edge of Jezero Crater, formed at the convergence of a Martian river and a crater lake billions of years ago. Its exploration tops the Perseverance science team's wish list because all the fine-grained sediment deposited at its base long ago is the mission's best bet for finding the preserved remnants of ancient microbial life.
[...] "The delta is why Perseverance was sent to Jezero Crater: It has so many interesting features," said Farley. "We will look for signs of ancient life in the rocks at the base of the delta, rocks that we think were once mud on the bottom of 'Lake Jezero.' Higher up the delta, we can look at sand and rock fragments that came from upstream, perhaps from miles away. These are locations the rover will never visit. We can take advantage of an ancient Martian river that brought the planet's geological secrets to us."
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