Behold, directly overhead, a certain strange star was suddenly seen... Amazed, and as if astonished and stupefied, I stood still.
— Tycho Brahe
December 23, 2009: The solar system is passing through an interstellar cloud that physics says should not exist. In the Dec. 24th issue of Nature, a team of scientists reveal how NASA's Voyager spacecraft have solved the mystery.
Astrophotography equipment