Robotic Spaceflight Will the Messenger probe to Mercury be able to get a photograph of the asteroid Icarus?
Science Ask Astro web extra: What would the Sun’s rays do to Earth if the ozone layer was no longer present?
Science Does flying in a plane underneath the aurora expose a person to radiation? Would it be dangerous?
Exotic Objects Is it possible for a large star to collapse itself out of existence rather than just forming a black hole?
Telescopes and Equipment I have a 70-millimeter refracting telescope. Would a scope with a larger diameter make objects look bigger or closer?
