http://www.newsweek.com/meteor-shower-eta-aquariids-halleys-comet-1798275

As the Earth speeds towards a trail of debris left by Halley's comet, the Eta Aquariid meteor shower is due to be seen across the globe.

The Eta Aquariids happen every year, between mid-April and the end of May, as the Earth passes the point in its orbit that coincides with Halley's comet's cloud of outbound debris from its 76-year orbit.