Mars is a cold and barren desert today, but scientists think that in the ancient past it was warm and wet. The loss of the early Martian atmosphere may have led to this dramatic change, and one of the prime suspects is the solar wind. Unlike Earth, Mars lacks a global magnetic field to deflect the stream of charged particles continuously blowing off the Sun. Instead, the solar wind crashes into the Mars upper atmosphere and can accelerate ions into space. Now, for the first time, NASA’s MAVEN spacecraft has observed this process in action – by measuring the speed and direction of ions escaping from Mars. This data visualization compares simulations of the solar wind and Mars atmospheric escape with new measurements taken by MAVEN.
On October 29, 2015 JPL announced that scientists have found patterns in the carbon dioxide concentrations in Earth’s atmosphere. What is most interesting is tha
“…OCO-2 scientists are now beginning to study the net sources of carbon dioxide as well as their “sinks””
Another interesting video is this supercomputer model of CO2 levels in Earth’s atmosphere for a whole year (2006):
On October 28, 2015, Charles Elachi, the director of the Jet Propulsion Laboratory (JPL) of Lebanese origins, announced his intent to retire by June 2016 to become a professor emeritus at the California Institute of Technology (Caltech).
The following video includes Elachi’s announcement as well as an amazing summary of 15 years worth ofachievements at JPL & NASA
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