Is the truth really out there?

Consider - you are lying on a beach somewhere sunbathing, and then the sun for some inexplicable reason suddenly blinks out of existence. You would continue to lie there basking in the sun's light and heat for a little over eight minutes more before you became aware of the fact. That's how long it takes light from the sun to travel to Earth. So for eight minutes or so you would be soaking up rays from a sun that wasn't there any more! But as far as you are concerned it would be there - you could see it, you could feel it's heat. Now let's assume there is a manned station on Mercury. Light takes about three minutes to get from the sun to Mercury, so the sun would disappear for them some five minutes before it did for you. For five minutes their truth (the sun has disappeared) would be different from your truth (the sun is still shining). So just what is "truth"? More to come.