The Sun could already be gone — and you'd never know yet.
Light moves at around 300,000 kilometres per second. Nothing in the universe travels faster. And yet, even at that speed, crossing the 150 million kilometres between the Sun and Earth takes roughly 8 minutes and 20 seconds. So every photon landing on you right now set off before most people's morning alarms. If the Sun simply ceased to exist at this very moment, the sky would stay blue, shadows would still fall sharp, and you'd feel nothing unusual — for over 8 minutes. Then the light would stop. We talk about space as empty distance, but it's also a time delay baked into everything you see. The nearest star beyond our Sun? That light is over 4 years old before it even grazes your eye. Follow Deep Field Vault for more of the universe, one unsettling fact at a time.