DCPC by Ensign February 20, 2021 0 The DSN Downlink Channel Processor Cabinet, one of which contains a DSN Downlink Channel, DC.
Debris Disk by Ensign February 20, 2021 0 A ring-shaped circumstellar disk of dust and debris in orbit around a star. Debris disks can be created as the ...
Declination by Ensign February 20, 2021 0 The angular distance of an object in the sky from the celestial equator.
Declination (Dec.) by Ensign February 20, 2021 0 The celestial equivalent of latitude, denoting how far (in degrees) an object in the sky lies north or south of ...
Density by Ensign February 20, 2021 0 The amount of matter contained within a given volume. Density is measured in grams per cubic centimeter (or kilograms per ...
Descending node by Ensign February 20, 2021 0 The point at which an orbit crosses a reference plane (such as a planet's equatorial plane or the ecliptic plane) ...
Disk by Ensign February 20, 2021 0 The surface of the Sun or other celestial body projected against the sky.
Diurnal cycle by Ensign February 20, 2021 0 A diurnal cycle is any pattern that recurs every 24 hours as a result of one full rotation of the ...
