Tag: comets

• The first spacecraft to orbit a comet has arrived

  We have known about comets as long as we have been human. When we see comets in the sky from Earth, the first thing we notice is their tails: streamers of gas and dust pointing away from the Sun. And those tails can be very impressive, stretching across a significant fraction of the sky. The…

  Matthew R. Francis

  August 11, 2014

  Astronomy

  Comet 67P, comets, planetary science, Rosetta