Type Ia supernovae serve as vital distance indicators that show how our cosmos is expanding. But these events are still shrouded in mystery.
As political support for Moon landings waned, the crew of Apollo 17 ensured the program ended on a scientific high.
There’s no better time to explore the Red Planet’s surface with your telescope.
Your guide to the greatest eclipses on Earth.
Often leading to paradigm shifts in how we understand the universe, these classic works endure.