Arcturus (at a magnitude of -0.05), one of the few stars mentioned by name in the Bible, is a giant, about 25 times the ...

Earth’s sister planet reaches greatest western elongation and dichotomy as the waxing Moon slides along the ecliptic in the ...

In recent years moviegoers have been treated to a myriad of superhero movies.  This month’s Colorado sky hosts a ...

New Moon brings excellent dark-sky conditions for observing galaxies, nebulae, and star clusters in the sky this week.

By Deane Morrison As the summer stars move into prominence in the evening sky, the spring constellation Leo, the lion, slinks ...

The new moon of May occurs on May 26. Two days later the moon will make a close pass to Jupiter in the evening sky, and the ...

This motion means that any given array of constellations will appear in the same location of the sky two hours earlier ... Venatici), which makes a small constellation between Arcturus and the ...

A dazzling cosmic swirl, NGC 3507 shines alone in this Hubble image, though it secretly belongs to a dynamic galactic duo.

I pick out North America’s celestial highlights for the week ahead (which also apply to mid-northern latitudes in the ...

Strawberry moon will be at full illumination June 11, the latest of the full moons tied to Native American tradition.