The ESA’s Cryosat mission has been watching the Arctic sea ice with a high degree of precision ever since it was launched in 2010 to monitor the changes in thickness and shape of polar ice. It’s taken two years for scientists to tackle the amount of data that Cryosat generated.
After yesterday’s ride, I wanted to go out and do about 100 km, but I got started too late and didn’t want to exhaust myself as I plan on going out again tomorrow. Monday won’t be a rest day. I felt pretty good and started to pace myself, even though I rode the first 25 km in 34:40.
The original energy source for the aurora is the solar wind, a stream of charged plasma that billows from the Sun and deforms the Earth’s magnetic field, producing a long ‘magnetotail’ on the far side of the Earth.
While coronal mass ejections can cause larger plasma storms that last for more than 24 hours, deformation of the magnetotail can create smaller substorms that last just a few hours.