Science How can we determine that inflation occurred from 10-35 to 10-32 second after the Big Bang, and that the universe grew 1026 in that time?
Galaxies, Science How can a galaxy be over 27 billion light-years from Earth if the universe is only about 13 billion years old?
Milky Way How far from Earth would a space camera have to be to obtain a full image of our own Milky Way galaxy?
Science Since the Milky Way is a flat disk, it should appear as a straight line across the sky. However, in photos such as on pages 50–51 of the April issue, it is a curved arc. Why?
