What might the solar system resemble if the sun were to shed its outer atmosphere, leaving its core behind? A fresh perspective on the Helix Nebula, an iconic planetary nebula known as NGC 7293, using ...
NASA's James Webb Space Telescope has done it again, spotting something that its predecessor, Hubble, couldn't see. The Ring Nebula, an oblong-donut-shaped planetary nebula in the constellation Lyra, ...