🌌 Night Sky This Week: Through September 18, 2026 🌠

Summer may still be bringing us plenty of heat, but the night sky this week is getting longer, and the first hints of fall are already showing up in the sky. That makes this a great time to spend a few minutes outside after dark and see what's happening overhead.

You don't need an expensive telescope to enjoy the night sky. A comfortable lawn chair, a clear evening, and a little patience are often all you need!

🌙 Evening Sky: Venus, Mercury & Saturn

Venus is nearing the end of its evening appearance, so this is a good time to catch it before it disappears into the twilight. It sits very low in the western sky after sunset, so you'll need a clear horizon to spot it.

Venus will reach peak brilliance around September 18, making it an especially bright sight despite its low position. Look toward the western horizon shortly after sunset. The planet is so bright that it can sometimes be picked out even before the sky becomes completely dark.

And there's an especially nice pairing coming up. The thin crescent Moon will pass near Venus around September 13–14, giving you a beautiful opportunity for a quick evening sky photo.

Mercury is also hanging around the western evening sky, but it is much more difficult to spot. It sits low on the horizon and disappears shortly after sunset. If you have a very clear western horizon, look for it about 20 minutes after sunset.

The real evening star this week, however, is Saturn. Saturn rises at about 9 PM and remains visible for most of the night. It is bright enough to stand out from the surrounding stars, making it one of the easiest planets to identify.

Saturn is also approaching its October opposition, when it will be especially well placed for viewing. Its rings are gradually opening again after appearing nearly edge-on in 2025. By September 2026, they are noticeably more open, although they are still far from their widest appearance.

If you have a small telescope, Saturn is definitely worth a look. Even a modest backyard telescope can reveal the rings, and with good viewing conditions you may also be able to spot Titan, Saturn's largest moon.

🌅 Morning Sky: Mars & Jupiter

If you're willing to set the alarm a little earlier, the morning sky has some great sights of its own.

Mars rises around 1–2 AM in September and can be found in the constellation Gemini. It isn't nearly as bright as it will eventually become, but its distinctive reddish-orange color makes it relatively easy to identify.

That rusty color isn't just your imagination. Mars gets its reddish appearance from iron minerals in its surface material that have oxidized — essentially, they have rusted — over billions of years.

Mars will gradually become brighter as Earth and Mars move closer together in their respective orbits.

Jupiter rises later, around 4 AM in mid-September, and is best viewed during the hours before sunrise. It is much brighter than Mars, so once it is above the horizon, it should be fairly easy to recognize.

If you have binoculars or a telescope, Jupiter is especially rewarding. You may even be able to spot some of its four largest moons, known as the Galilean moons.

✨ Constellation of the Week: Scorpius & Sagittarius in the Night Sky this Week

One of the unmistakable signs of summer is Scorpius climbing through the southwestern evening sky. It really does look like a giant scorpion, with curved claws and a long, sweeping tail.

Its brightest star, Antares, has a beautiful reddish-orange glow. The name Antares means "rival of Mars," because ancient skywatchers noticed how similar the two appeared in color.

Greek mythology has a story for Scorpius, too. According to legend, the giant scorpion was sent to defeat the mighty hunter Orion. Zeus eventually placed them on opposite sides of the sky so they would never meet again.

That's why Scorpius is a summer evening constellation, while Orion becomes a familiar sight later in the year.

Just east of Scorpius, you'll find Sagittarius, the Archer. While the constellation is supposed to represent a centaur with a bow, most of us probably recognize its stars as something much simpler — the Teapot.

Once you find the Teapot, look for the "steam" rising from its spout.

That faint stream of light points toward one of the richest parts of the night sky — the Milky Way

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🌌 Look Toward the Milky Way

As the sky gets darker, the Milky Way stretches overhead like a faint, hazy river of light.

If you can get away from town and find a location with little light pollution, take some time to simply look up. The difference between a dark rural sky and a sky affected by city lights can be amazing.

And that hazy band isn't a cloud. It's the combined glow of billions of stars in our own galaxy.

When we look toward Sagittarius, we're looking in the general direction of the center of the Milky Way, approximately 26,000 light-years away. Hidden in that region are glowing nebulae, ancient star clusters, and countless other objects that can be explored with binoculars or a telescope. NASA specifically recommends following the "steam" of the Teapot toward the thickest part of the Milky Way this month.

For an even better view, give your eyes 15–20 minutes to adjust to the darkness. Avoid looking at bright phones or flashlights during that time. Your eyes will gradually become much more sensitive to faint objects.

⭐ One More Thing to Watch For

There is another good reason to step outside this week: the Moon will be moving through the evening sky and passing near some of the season's most recognizable sights.

Around September 17, the Moon will be near Antares, the reddish heart of Scorpius. Then, as we approach September 18, Venus will be reaching its peak brilliance in the evening sky.

So grab a lawn chair, head outside, and give your eyes a few minutes to adjust.

You might be surprised at how much there is to see when you simply look up. 🌌✨