butterfly nebula
Why Does the Butterfly Nebula Look Like This?
The Butterfly Nebula is changing, and astronomers are puzzled as to why these changes are occurring. Observations of this planetary…
2 years ago
Why do Planetary Nebulae Look the Way They Do?
Planetary nebulae are the most beautiful objects in the night sky. Their gossamer shells of gas are otherworldly and evocative.…
4 years ago
New Hubble Photos of Planetary Nebulae
Planetary nebulae are astronomy's gateway drug. Their eye-catching forms make us wonder what process created them, and what else is…
4 years ago