Robotic Spaceflight, Science, Solar System, Space Exploration Cassini finds plethora of plumes, hotspots at Enceladus
Observing, Telescopes and Equipment Is it normal for telescope optics to freeze up when the temperature is below freezing with high humidity? If so, how can I prevent this?
Exotic Objects If our galaxy’s central supermassive black hole devoured a star, what effects or phenomena would be visible to observers on Earth? How likely is this sort of event to happen within a few human lifetimes?
