The spectral composition of the Sun’s output is not constant but varies over multiple timescales, from days to decadal cycles. Solar spectral irradiance variability (SSI) refers to the changes in the ...

A General Atomics business unit has secured a potential six-year, $32.9M contract to develop spacecraft NASA will use on a mission to measure solar energy input to Earth. The company’s electromagnetic ...

NASA has awarded a sole source contract to the Laboratory for Atmospheric and Space Physics (LASP) at the University of Colorado Boulder for the Total and Spectral Solar Irradiance Sensor-2 (TSIS-2).

Radiometric techniques are an unambiguous scientific method aimed at gauging the distribution of the radiation's energy in space. Radiometric methods are markedly different from photometric techniques ...