This weekend's September new moon will rise amid a partial solar eclipse, giving way to the autumnal equinox. Here's when, ...

During a total solar eclipse, the bright disk of the Sun is blocked, and the faint outer atmosphere becomes visible. It is ...

Every year, the moon, Earth's reliable celestial companion for 4.5 billion years, is getting 1.5 inches away. The distance to the moon is calculated by measuring the amount of time it takes for light ...

Day and night will get equal time for a brief moment as the equinox arrives. The Earth will experience about the same amount of day and night on Monday when the autumnal equinox arrive. From ...

Sunita Williams has turned 60 years old today. Her journey is marked with enduring space missions that inspire millions of people worldwide.

Sky This Week is brought to you in part by Celestron. Friday, September 19The Moon passes 0.8° north of Venus and 1.3° north ...