The wavelength is what determines light’s color, and these LEDs are amber (605-nanometer wavelength), light red (630 nm), deep red (680 nm), and near infrared (855 nm).

Watch this amazing time-lapse of a totality lunar eclipse that occurred - Blood Worm Moon. Credit: Timeanddate.com | time-lapse by Space.com ...

See the Red Planet slip behind the moon and re-emerge in this time-lapse. Credit: Griffith Observatory | edited by ...