Solar System With many new planet discoveries being hot Jupiters, is it possible that Mercury is the leftover core of a gas giant?
Cosmology I’ve heard that wormholes could make time travel in the future possible. How realistic is this phenomenon?
Science I heard that the light from nuclear fusion reactions in the Sun’s core takes about 200,000 years to reach its surface. I thought the speed of light is constant. Why does it take so long?
