15 August 2016
Was early Mars warmed by cirrus cloud cover?
... necessary warming, suggesting that other greenhouse mechanisms are needed. However, the team do suggest that warming by cirrus cloud may be possible if the mean surface temperature of the planet is lower than their modelled value of 273 K and...
14 August 2019
Protesters block asteroid detection safety work
... trained 55 of the Canada-France-Hawaii Telescope’s visible-light detectors on their top target. “Despite some thin cirrus clouds and a lot of moonlight, we needed only four minutes of data to obtain proof that we had found the right...