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A telescope image of Comet 10P/Tempel 2, showing a bright blue-green coma glowing near the center of a richly star-filled field. A diagonal satellite or aircraft trail crosses through the frame. The surrounding star field is dense with colorful blue, orange, and white stars against a dark background.

The Sky Today on Saturday, July 18: Comet Tempel’s knife-edge tail

Planetarium simulation of the western sky on July 17, 2026 at 9:40 PM. A thin crescent Moon and Venus appear side by side low on the horizon, with the Melotte 111 star cluster (the Coma Star Cluster) labeled near the top of the frame.

The Sky Today on Friday, July 17: The Moon skims south of Venus

The Moon as it will appear on July 20, 2026

Sky This Week, The Sky This Week

The Sky This Week from July 17 to 24: Lunar time travel

The Sky Today on Thursday, July 16: The Moon passes the Lion’s heart

The Sky Today on Wednesday, July 15: The Summer Triangle overhead

Planetarium simulation of the eastern sky on July 14, 2026 at 4:30 AM. Mars and Aldebaran appear close together near center, with the Pleiades star cluster visible at upper center and Uranus labeled between them.

The Sky Today on Tuesday, July 14: Mars sits north of Aldebaran

Black-and-white astrophotograph of M29, a sparse open star cluster showing roughly a dozen bright stars arranged in a loose rectangular pattern against a field of fainter background stars.

The Sky Today on Monday, July 13: A young cluster in Cygnus

Telescopic simulation of Saturn and its moons on July 12, 2026 at 3:30 AM CDT. Saturn with its rings is centered, with moons Tethys and Rhea to the left, Dione to the right, and Titan below. A 30-arcsecond scale bar appears at the bottom center.

The Sky Today on Sunday, July 12: Titan sits near Saturn

Saturn and its moons as they will appear July 11, 2026, at 4 AM EDT

The Sky Today on Saturday, July 11: Dione passes north of Saturn

Sky chart showing the northern sky on July 10, 2026, at 11 p.m. The double star Mizar and its companion Alcor are labeled near the upper center of the frame, part of the Big Dipper's handle. A dark, rolling horizon is visible at the bottom.

The Sky Today on Friday, July 10: Meet Mizar and Alcor

Sky This Week, The Sky This Week

The Sky This Week from July 10 to 17: The Moon and Venus share Leo

Sky chart showing Venus and Regulus in close conjunction low in the western sky on July 9, 2026. Venus appears as a bright, glowing white disk near the center of the frame, with the star Regulus just below it. The Sickle asterism of Leo is labeled above and to the right. The sky transitions from deep blue at the top to a warm orange-brown glow near the horizon, suggesting twilight conditions.

The Sky Today on Thursday, July 9: Venus stands above Regulus