In Science, Orionids Meteor Shower, which is a meteor shower created by dust grains left behind by Halley's comet, is an event which has been observed since ancient times.
This event can be seen in the constellation Orion in the eastern sky from October 2 to November 7, and usually peaks around October 21-22. It may require you to find a dark location away from city lights, and let your eyes adjust to the darkness for ~20 minutes.
Here are some ideas for how you can participate in this event: