Mercury transits across the Sun, and the dimming of the “Demon star,” Algol. On November 11 we’re in for a rare treat, as the innermost planet, Mercury, passes directly in front of the Sun for a few hours. […]
We’re in a several-month period right now when the new moon falls right around the end of each month. This means we get to enjoy lovely waning crescent moons at dusk for the first few days of each month, and delightful waxing crescents in the predawn sky near the end of each month. […]
As NASA marks the 50th anniversary of the Apollo 11 Moon landing, here are five things to know about the Moon that you can share with others: How far away is the Moon? How big is the Moon? What color is the Moon? Why do we always see the same side of the Moon? And what are the dark areas on the Moon? […]
