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Astronomy Essentials

full-moon-and-halo-Randy-Miller-Anderson
Tonight | Oct 06, 2014

Minor lunar standstill lessens impact of 2014 Hunter’s Moon

The diminished inclination of the moon’s orbit to Earth’s equator lessens the impact of this year’s Hunter’s Moon.

Giacobini-Zinner, parent comet of Draconids, via NASA
Tonight | Oct 06, 2014

Everything you need to know: Draconid meteor shower

Can you believe it? A meteor shower on the night of the lunar eclipse.

draconid-meteor-radiant
Tonight | Oct 06, 2014

Find the radiant point for the Draconid meteor shower

Find the two brightest stars in Draco the Dragon, to gaze into the Dragon’s flaming eyes and to behold the radiant point of the Draconid meteor shower. Sound exciting?

Total solar eclipse via Fred Espenak
Blogs | Oct 02, 2014

How many solar and lunar eclipses in one calendar year?

Each calendar year has at least four eclipses – two solar and two lunar. Most years have four, but five, six or even seven eclipses are also possible.

2014-sept-25-26-mercury-spica-multiple-moon-night-sky-chart
Tonight | Sep 25, 2014

Moon and Mercury low in west after sunset September 25 and 26

Try to catch the young moon, Mercury and star Spica in the sunset direction on September 25 and/or 26. Best seen from S. Hemisphere. N. Hemisphere viewers … try it!

Image Credit: Esparta
Tonight | Sep 21, 2014

Everything you need to know: September equinox

September equinox is Monday at 9:29 p.m. CDT (September 23 at 2:29 UTC).

Photo via Nezih Durmazlar
Tonight | Sep 09, 2014

Minor lunar standstill lessens impact of 2014 Harvest Moon

The diminished inclination of the moon’s orbit to Earth’s equator lessens the impact of this year’s Harvest Moon.

Photo Credit: Arby Reed
Tonight | Sep 09, 2014

Looking for a tide almanac? EarthSky recommends …

The tide almanacs recommended here are based on astronomical influences on the tides. They can help you know when to expect high and low tides.

Moon Sept. 18, 2013 by Amy Simpson-Wynne
Tonight | Sep 06, 2014

Everything you need to know: The super Harvest Moon of 2014

That bright moon now in the evening sky is waxing toward a Harvest Moon on the night of September 8-9. A super Harvest Moon!

Zodiacal light
Blogs | Aug 29, 2014

Everything you need to know: 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.