Scientists reviewing data from the Mars Color Imager (MARCI) aboard NASA's Mars Reconnaissance Orbiter (MRO) have determined that the tau estimate (a measure of the amount of haze in the Martian atmosphere) in the skies above the rover Opportunity has been below 1.5 for two consecutive measurements.
Takes First Scientific Observations Of Asteroid Bennu
The OSIRIS-REx spacecraft has begun its science mission as it continues to approach near-Earth asteroid Bennu. Mission principal investigator Dante Lauretta, a professor of planetary science and cosmochemistry at the University of Arizona's Lunar and Planetary Laboratory, Tweeted "Big day for @OSIRISREx — we start our first science observations — searching for dust plumes around Bennu" on Tuesday.
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