1995, J. Keat, M. Challa, D. Tracewell, K. Galal, “Earth Horizon Modeling and Application to Static Earth Sensors on TRMM Spacecraft”, in Kathy R. Hartman, editor,Flight mechanics estimation theory symposium 1995, page229:
Data from Earth sensor assemblies (ESAs) often are used in the attitude determination (AD) for both spinning andEarth-pointing spacecraft.
Used other than figuratively or idiomatically:seeEarth,pointing.
1989, Deborah M. Badi, Jeffery T. Farmer, Paul A. Garn, Gary L. Martin,Coneceptual Design of a Synchronous Mars Telecommunications Satellite, page10:
Communication from Earth, on channels E1 and E2, is received by the largerEarth-pointing antenna on the Ka band up link frequency.
