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Bruce McClure

Full Corn Moon on September 6

That’s September 6 at 7:03 UTC. So the crest of the moon’s full phase may have already passed, for you. Still, we all can enjoy this 3rd and final full moon of northern summer (southern winter) tonight.

Watch for zodiacal light or false dawn

The zodiacal light is an eerie light extending up from the horizon. No matter where you are on Earth, springtime or autumn is the best time to see it.

Harvest Moon on September 5-6?

The moon turns full on September 6, 2017 at 7:03 UTC. For us in the Americas, our fullest moon comes on the night of September 5. Is it a Harvest Moon? Read on.

Earth passing between Neptune and sun

We’re closest to Neptune for 2017 on September 4. Neptune’s opposition – when it’s 180 degrees from the sun on the sky’s dome – is one day later, on September 5. You need optical aid to spot it. Links to charts here.

Pluto in moon’s direction September 1

On September 1, both the moon and dwarf planet Pluto lie in front of the constellation Sagittarius the Archer.

Arc to Arcturus and spike to Spica

In 2017, the bright planet Jupiter guides your eye to the star Spica. Yet, in any year, you can find Spica – and another bright star, Arcturus – via the Big Dipper.

Capricornus? Here’s your constellation

No matter where you live worldwide, Capricornus the Sea-goat climbs highest in the sky in early September. How to see it, and how a sea-goat came to reside among the stars.

Alpha Cephei is a rapidly rotating star

While not one of the most conspicuous stars in the night sky, Alderamin – aka Alpha Cephei – is easy to spot, and is interesting for its rapid rotation on its axis.

Closest far-moon of 2017 on August 30

Today’s moon reaches its most distant point from Earth for the month. Astronomers call this point an “apogee” of the moon. This month’s apogee is closer than any other in 2017.

Moon, Antares, Saturn on August 29

Last night’s moon was sweeping past Antares. Now the moon is edging closer to Saturn. Watch for the triangle of these 3 objects in your evening sky.