RT @DavidBflower: New Insights From Rosetta’s Comet Mission. Fascinating @SkyandTelescope article by Anne McGovern. skyandtelescope.com/astronomy-news…
RT @DavidBflower: New Insights From Rosetta’s Comet Mission. Fascinating @SkyandTelescope article by Anne McGovern. skyandtelescope.com/astronomy-news…