Alien Life, Science Could an asteroid the size of the one that killed the dinosaurs knock Earth out of its orbit and create a global climate shift?
Science How does the “Planets this month” foldout map work? I don’t see any time given for the map, unlike the circular star map on the following page.
Human Spaceflight, Science Can you see the American flag Apollo 11 astronauts left on the Moon in 1969?
