If you're awake just before dawn, and the sky's clear where you live, see if you can spot one of the solar system's free extravaganzas?
We're curently passing through the Perseids - the name given to the debris shed by Comet 109P/Swift-Tuttle. The debris particles are tiny - roughly the size of a match head, or a dried pea. Inbound at around 50Km a second, they release their energy as they hit the earth's atmosphere and burn up in a burst of intense light.
If you're lucky you'll see about one a minute on average, and some of the larger ones will leave trails that last for a few seconds. Well worth a look.