RT @astroduff: I told @BreakfastNews about sinkholes seen by @ESA_Rosetta esa.int/Our_Activities… letting us see 100m into #Comet67P http://t.co/geLmBTd1Ul
RT @astroduff: I told @BreakfastNews about sinkholes seen by @ESA_Rosetta esa.int/Our_Activities… letting us see 100m into #Comet67P http://t.co/geLmBTd1Ul