For 50 years, astronomers have been watching in bafflement as a giant star flickers with powerful, erratic X-ray emission.

Astronomers warn that proposed orbiting mirrors and millions of AI satellites could significantly brighten the night sky, affecting telescopes, scientific research, and global dark sky areas.

Tonight, March 19, observers can see the northern lights, a crescent moon near Venus, and multiple constellations. Forecasts ...

Abstract: Direct-satellite-to-device (DS2D) communication is emerging as a promising solution for global mobile service extension, leveraging the deployment of satellite constellations. However, the ...