Close planet conjunction – Jupiter and Venus very close in tomorrow’s pre-dawn sky . Watch the moon slide down to join them this week. Closest on Saturday morning. Saturn and Mars still show in the evening twilight – This week watch Mars slide east(left) under Saturn. We’re doomed! – Milky Way and Andromeda galaxy are set to collide! When? Oh, 4 billion years from now. So the race is one between which kills us off first; galaxy collision or sun going nova.