Moon near star Aldebaran February 15

From some places worldwide, the moon will cover Aldebaran for up to an hour. The rest of us get an awesome view of this bright star right next to the moon.

Moon receding tonight in 2 ways

Tonight's moon has passed its monthly perigee, or closest point. Plus, over the long course of time, the moon's mean distance from Earth is increasing.

Mercury and Venus close before sunrise

Starting an hour or so before sunrise, for the next several mornings, aim your binoculars at dazzling Venus to spot Mercury nearby.

Moon, Venus, Mercury on February 6

Let the crescent moon guide you to Mercury as darkness wanes toward dawn on Saturday, February 6. And see all 5 planets before dawn!

Moon, Venus, Mercury next few mornings

Look for the waning crescent moon near planet Venus on the mornings of February 5, 6 and 7. And see all 5 planets before dawn.

Moon, Saturn, Antares on February 3

Before dawn on Wednesday, let the moon introduce you to Saturn - in fact, to all five visible planets. Antares is the bright star near Wednesday morning's moon.

First full moon on Christmas since 1977

Moon phases recur on or near same calendar dates every 19 years. Why didn't we in North America have a full moon on Christmas Day 19 years ago?

An ocean in the sky

The star Fomalhaut shines in lonely splendor on these November evenings. Look south from the Northern Hemisphere - more overhead from the Southern Hemisphere. The region of the sky around Fomalhaut is known as a celestial ocean.

Blue Moon of July 2015 and future Blue Moons

Want to know the dates of Blue Moons - second full moons within a single calendar month - for the years ahead? Click here.

First of two July full moons on July 1

The first of two July 2015 full moons comes tonight. The second July full moon - aka a Blue Moon - will come on July 31.