The light hitting your skin right now left the Sun 8 minutes ago

Light travels at about 300,000 km per second, and the Sun is roughly 150 million kilometres from Earth. That means sunlight takes approximately 8 minutes and 20 seconds to reach us. This has a strange implication: if the Sun suddenly disappeared, we wouldn't know for over 8 minutes — we'd be watching the last light that had already left before the Sun vanished. In astronomy, this is called 'light travel time', and it means we never see the universe as it is now, only as it was.