Enjoying EarthSky? Subscribe.

267,411 subscribers and counting ...

Look for Orionid meteors this month

Details on the annual Orionid meteor shower. How and when to watch. In 2017, the peak morning is probably October 21. But start watching now, before dawn!

Star of the week: Schedar

Cassiopeia the Queen is one of the easiest-to-recognize constellations, having the shape of an M or W, Schedar is the Queen’s brightest star.

Meet the Double Cluster in Perseus

The Double Cluster in the constellation Perseus is a breathtaking pair of star clusters, each containing supergiant suns. How to find it in your sky.

EarthSky’s 2017 meteor shower guide

Draconids have passed, mostly in bright moonlight. Orionids, Taurids, Leonids and Geminids ahead! Orionids peak before dawn October 21, in a moon-free sky.

International Observe the Moon Night

A public event coming up on October 28. Events scheduled around the globe. Click in for more info and links.

Close encounters of the planet kind

Brilliant Venus and faint Mars swept close last week, in the east before sunup. Check out these awesome photos!

All you need to know: Draconids in 2017

The Draconids are best seen in the evening hours. In 2017, a bright waning gibbous moon will interfere, but still … give it a try!

See it! 2017’s Harvest Moon

Photos and videos from the EarthSky community of 2017’s Harvest Moon. Thanks to all who submitted photos, or posted them to EarthSky Facebook!

Find the Draconid radiant point

You don’t have to identify a meteor shower’s radiant point to watch the show. But the radiant of the Draconids is fun to find! Here are some ways to do it.

Shine on, Harvest Moon!

Did you see the moonrise last night? Gorgeous. And – for those in the Northern Hemisphere, now near our autumnal equinox – we’re now due for lovely Harvest Moon rises over the next several evenings.

Alpheratz is part of the Great Square

Finding the star Alpheratz can help you spot the Andromeda Galaxy, the nearest large spiral galaxy to Earth.

Aquarius? Here’s your constellation

Look for Aquarius the Water Bearer this month. How to find it, its famous Water Jar asterism, plus a few stories from the ancient myths.

2017 was a lousy year for Mars, but wait

Mars was faint and in our evening sky. Now it’s faint and in our morning sky, near bright Venus. But wait! 2018 will be a spectacular year for Mars.

5 myths about the moon

Moon myths, take that! Here are 5 of the most common myths about our moon explained.

October guide to the bright planets

A lone planet – Saturn – is easily seen at nightfall. Mars and Venus are up before dawn. Mercury and Jupiter can’t be seen easily; they’re in the sun’s glare.

Gamma Cephei: A future Pole Star

Gamma Cephei will someday be a Pole Star for Earth.

How fast is our universe expanding?

Here’s a great New ScienceCast video about the controversial Hubble Constant. It’s the key to knowing the age of our universe and much more.

Sun photobombed Mars encounter with comet Siding Spring

Comet Siding Spring swept closer to Mars than any known comet in recorded history, creating the largest-ever-known meteor shower. But the sun got in on the act.

Biblical signs in tonight’s sky?

Will the September 23, 2017 sky mirror “signs” from the Bible’s Book of Revelation? Possibly. But this same sky scene has been seen 4 other times in the past 1,000 years. An astronomer explains.

Fomalhaut had first visible exoplanet

How to see the star Fomalhaut in your sky and a word about Fomalhaut b, the first planet beyond our solar system visible to the eye in photographic images.