Highlights include two comets, a moon-Jupiter conjunction, and good viewing for Mercury.
The WMO is reporting that atmospheric CO2 concentrations reached a record high of 390 ppm in 2011. This should come as no great surprise,
Highlights include two comets, a moon-Jupiter conjunction, and good viewing for Mercury.
The WMO is reporting that atmospheric CO2 concentrations reached a record high of 390 ppm in 2011. This should come as no great surprise, since CO2 concentrations have set a new record high pretty much every year since we started making measurements. See, for example, this plot of CO2 concentrations at Mauna Lo