Consciousness could be a fundamental part of reality, like gravity or matter, according to this controversial theory.

"A plane flew through some supercooled water droplets within cirrocumulus clouds. The plane introduced ice crystals, allowing for the supercooled droplets to freeze immediately. A hole is left behind, ...

The third known visitor from interstellar space, comet 3I/ATLAS, is putting on a show that plays out in high‑energy light instead of visible fireworks. As it barrels through the inner solar system, ...