Named after constellation Lyra, the Lyrids are one of the oldest recorded meteor showers—according to some Chinese historical texts, the shower was seen over 2,500 years ago.
The fireballs in the meteor shower are created by debris from comet Thatcher, which takes about 415 years to orbit around the Sun. The comet is expected to be visible from Earth again in 2276.
April Lyrids might surprise us. Under almost perfect conditions, we are likely to see 10-20 meteors per hour but there have been unpredictable outbursts before. Activity of more than 100 meteors per hour occured in 1803 (Virginia), 1922 (Greece), 1945 (Japan), and 1982 (U.S.).