"Heartlight" is a song written by Neil Diamond, Carole Bayer Sager and her then-husband Burt Bacharach, and recorded by Diamond in 1982. It reached #5 on the Billboard Hot 100 charts, becoming his eighth Top 5 hit on the Hot 100 chart. The song also spent four weeks atop the adult contemporary chart in late 1982.
The song is inspired by the blockbuster movie E.T. the Extra-Terrestrial. When E.T. (Extra-Terrestrial) leaves Earth, his heart glows a luminous red; hence the title of the song. The entire song is about an E.T. which came to Earth but unfortunately never made it on time to the spacecraft. The E.T. then spent time on Earth and made a new friend, persuading to help the E.T. return home.
The lyrics of the song are based on the famous scenes in the movie. For example:
is a strong reference to E.T and Elliot riding a bicycle across the moon, heading to the forest.