Science Where is Hewett 1, the largest-known planetary nebula mentioned in “See a star die” (February 2005)?
Science If Mars and Venus could swap places, how much brighter would Venus appear from Mars’ current orbit?
Science The March 2005 issue mentioned a newly discovered stellar neighbor, SIPS 1259-4336. How do astronomers use parallax to determine if a star is a close neighbor of the Sun?
