At the heart of our own galaxy, there is a dense thicket of stars with a supermassive black hole at the very center. NASA's ...
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 ...
Astronomers have long sought evidence to explain why comets at the outskirts of our own solar system contain crystalline ...