This Hubble telescope image shows planets and asteroids whirling close to a giant black hole and being smashed to smithereens, creating the thick, donut-shaped clouds of debris.

This Hubble telescope image shows planets and asteroids whirling close to a giant black hole and being smashed to smithereens, creating the thick, donut-shaped clouds of debris.

So far we have observed 300,000,000,000,000,000,000,000 stars in the universe. Most of those are larger than our sun.

So far we have observed 300,000,000,000,000,000,000,000 stars in the universe. Most of those are larger than our sun.