Two great worlds

We, humans, are supposed to be in about midway between the very small (inner world of atoms) and the very large (galaxies and beyond) in terms of scale. We are mostly unaware of the extraordinary events going on in the world of minuscule beings (let's keep out the atoms, rather ponder about small life-forms) and in the world of giants. Two instruments, a microscope and a telescope, can give a glimpse into the two worlds which are fantastically bizarre from our everyday world. Why should we miss the fun?