Two planets stand side by side as the evening twilight continues to delight and colorful stars shine in the sky this week.

Five years of imagery from NASA's Transiting Exoplanet Survey Satellite (TESS) have been stitched together to create an all-sky and northern & southern ecliptic mosaics. Credit: NASA/MIT/TESS and ...

"The diversity of ways that white dwarf stars can blow up is much greater than previously expected." There are a lot of ways ...

We're now just past the midpoint of astronomical winter — that moment marking the midway point between December's winter solstice and March's vernal equinox. That moment took place at 4:11 p.m.