United States Space Science Program: Report to COSPAR.

1970 Proceedings Aerosp Aerospace AFCRL airglow altitude analysis Apollo 12 Appl Astron Astronaut Astrophys Atmos auroral balloon Calif Churchill clouds cosmic rays COSPAR D region density detected detector diffusion distribution Earth Planet eclipse effects Eglin electric field electron content emission energy experiment flare flight flux geomagnetic Geophys GSFC hydrogen Icarus IEEE infrared instrument intensity interplanetary ionization ionosphere Laboratory laser latitude launched Lett low-energy lunar Lyman-a magnetic field magnetosphere measurements meteorite meteorological moon NASA NASA Tech neutral Nimbus observed obtained optical orbit oxygen ozone particles payload photometers planetary plasma plasmapause plasmasphere polar profiles protons radar radiation radio range region Research sample satellite Science solar wind sounding rocket Space Sci Spacecr spacecraft spectra spectrum stratosphere surface Symposium technique temperature thermal thermosphere tion tracking Univ upper atmosphere variations Venus Wallops Island wavelength waves White Sands x-ray