SpaceCosmic dust grains found on city rooftops for the first time Sifting through muck trapped in roof gutters in Paris, Oslo and Berlin yielded 500 tiny particles from the birth of the solar system 4.6 billion years ago 51¶¯Âþ
LifeSpacecraft could taste Europa's sea by sampling its atmosphere The moon’s watery plumes may vent into space from its hidden ocean. Now we have a way to study these jets weeks after a blast and maybe spot signs of life 51¶¯Âþ