Watch the stars and from them learn. To the Master's honor all must turn, Each in its track, without a sound, Forever tracing Newton's ground
— Albert Einstein
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
