New Moon: The moon is not visible in the sky. Except during a solar eclipse, Waxing Crescent: The moon is less than one-half illuminated by the sun but less than one quarter illuminated. Occurs when the moon's illumination is increasing, First Quarter: The moon is one-half illuminated by the sun. Occurs when the moon's illumination is increasing, Waxing Gibbous: The moon is more than one-half illuminated by the sun but not completely illuminated. Occurs when the moon's illumination is increasing, Full Moon
Preservationist is generally understood to mean historic preservationist: one who advocates to preserve architecturally or historically significant buildings, structures, objects or sites from demolition or degradation.
Digital preservation: The maintenance and management of digital objects, including both those that are born digital and were converted to digital format from analog, so that they can be accessed and used by future users. Digital object: A representation of some piece of information in