"I always have been," Tommy said, "even as a kid. But look at this." He brought his phone out from his pocket and quickly brought up a picture of what looked like a multi-colored cloud in space. "This is what that telescope is looking at," he said and pointed at the largest of the three telescopes, then held up the little screen for Rob to look at. "A telescope is a device that lets you see much further than you can with just your eye. Some of them use glass lenses to bend the light, and it lets you see further ahead of you. So if you're sailing a ship, and you have a telescope, you could see further ahead than if you don't have one. Rocks in the way, enemy ships, whatever. This telescope is looking a lot further away, so it's using radiowaves and... I've lost you, haven't I?"