Digital attitude control for NASA sounding rockets

Digital Video System for sounding rockets

Digital Video System on board MASER 10

Dim prospects for radar detection of Europa's ocean

Diploptene in Antarctic sediments

Direct detection of extra-solar planetary systems from balloon borne telescopes

Direct estimates of scale height from topside ionograms

Direct evaluation of the radial diffusion coefficient near L = 6 due to electric field fluctuations

Direct Evidence for Two-Fluid Effects in Molecular Clouds

Direct evidence for two-stage (bimodal) acceleration of ionospheric ions

Direct investigation of the redox properties of the atmosphere up to 95 km with silver detectors

Direct investigations of the electrical properties of the atmosphere with spherical mesh detectors

Direct measurement of conjugate photoelectrons and predawn 630 nm airglow

Direct measurement of geopotential height by the HIRDLS instrument

Direct measurement of the atmosphere's vertical electric field intensity up to 80 km

Direct measurements of atmospheric electroconductivity to heights of 80 km at the Antarctic station Molodezhnaia

Direct measurements of concentrations of atmospheric ozone and oxygen atoms in the upper layers of the atmosphere by means of silver sensors

Direct measurements of electron density, temperature and ion composition in an equatorial spread-F ionosphere

Direct observation of solidification in microgravity

Direct observation of the break-up of a nocturnal inversion layer using elemental mercury as a tracer