Deep-Sky Objects Since the discovery of the “Pillars of Creation,” what changes have occurred within them and the surrounding area?
The Moon Why does the daily moonrise time vary by as much as 60 minutes, and as little as 30 minutes during the same month?
Cosmology, Science Why are gravity and quantum mechanics incompatible with each other? Why can’t they be combined into a single formula or concept?
Astronomy for beginners, Observing Basics Why do the constellations and the Moon appear upside down from the Southern Hemisphere?
Exoplanets, Planets Why do aurorae appear strongest within rings centered on Earth’s poles instead of filled-in circles?
