It boggles the mind. All of it. The scale of space, the scale of time, our own tiny brief existence in it. The possibility that several civilization collapse

It boggles the mind. All of it. The scale of space, the scale of time, our own tiny brief existence in it. The possibility that several civilization collapses occurred right here and we wouldn't know it. The possibility that life elsewhere in the universe came and went and the light informing us of it won't reach us before we possibly burn out. Meanwhile we're just a flicker from a spent flintwheel. The thing that gave me a particular "oh" moment was reading the study that correlated Earth's geologic events (mass extinctions, impacts, etc) timed to our Sun transiting through the spiral arms of our galaxy. Fun read: https://arxiv.org/pdf/1309.4838.pdf https://arxiv.org/pdf/1309.4838.pdf