The universe’s background starlight is twice as bright as expected. It took a spacecraft at the solar system’s edge to make precise enough observations of dark sky ...

Measurements of the anisotropy power spectrum of the cosmic near-infrared background radiation show the clustering amplitude to be larger than existing model predictions involving distant ...

Observations from citizen scientists worldwide over the past 12 years reveal a worrisome trend – stars in the night sky are becoming more difficult to see due to rapidly growing light pollution.

The documentary “Watchers of the Sky” centers on Raphael Lemkin, who coined the word “genocide” and devoted his life to ensuring that the systematic extermination of people would be an ...

OBSERVATIONS of the diffuse X-ray background above approximately 20 keV, made from balloon platforms1–3, indicate a spectral index for the photon flux of at least 2 magnitudes. Recent rocket ...