Imagine gazing at a distant star, its light traveling millions or even billions of years to reach our telescopes. As we ...

The idea of a particle that races faster than light has long fascinated physicists. Known as the tachyon, it was originally dreamed up to help untangle paradoxes in quantum theory and relativity.

This controversial theory says the universe is subject to an ultimate, higher-order law that we can’t comprehend.

Pt. I, Stars, planets, and life : -- The size and scale of the universe -- From the day and night sky to planetary orbits -- Newton's Laws -- How stars radiate energy (I) -- How stars radiate energy ...

A fringe new theory suggests that time is the fundamental structure of the physical universe, and space is merely a byproduct. According to Gunther Kletetschka, a geologist — not a physicist, you’ll ...