2025, July 11: Mars Fades in Evening Twilight, Venus Passes Taurus’ V

July 11, 2025: Mars dims in the western sky after sunset while Venus, the Morning Star, shines near the V of Taurus before sunrise. Saturn climbs in the southeast as the bright Buck Moon illuminates the sky.

Venus and Aldebaran, July 13, 2020
2020, July 13: Venus appears 1.2° to the left of Aldebaran.

by Jeffrey L. Hunt

Chicago, Illinois: Sunrise, 5:25 a.m. CDT; Sunset, 8:27 p.m. CDT.  Check local sources for sunrise and sunset times. Times are calculated by the US Naval Observatory’s MICA computer program.

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Mars Fades in West

Mars, July 11, 2025
Chart Caption – 2025, July 11: Mars is in the western sky with Leo after sunset.

Mars is the lone bright planet visible tonight.  An hour after sunset, it is over 15° above the western horizon, marching eastward in front of Leo. This evening, Mars is 14.1° to the upper left of Regulus and 13.7° below Denebola, the Lion’s tail.

The Red Planet is considerably dimmer than when it was closest to Earth on January 17th. Tonight, it shines at only 7% of that earlier brightness. Its dimming is due to its increasing distance from Earth—now twice our average distance from the sun.

On August 6th, Mars sets at the end of evening twilight. After that, it remains visible only in progressively brighter twilight until it reaches solar conjunction early next year.

Mercury Moves toward Inferior Conjunction

Mercury as Never Seen Before
Photo Caption – Mercury as Never Seen Before. (NASA photo)

Mercury is still east of the sun, setting 66 minutes after nightfall. It passes between Earth and the sun at month’s end and jumps into the eastern morning sky, joining a line up of six bright planets.

Bright Evening Moon

scenic view of beach during dawn
Photo Caption – scenic view of beach during dawn (Photo by Alex Montes on Pexels.com)

Tonight, the bright moon rises over two hours after sunset. This light still brightly illuminates the ground for nighttime walks without flashlights.

Venus Passes V of Taurus

Venus, Taurus, July 11, 2025
Chart Caption – 2025, Jul 11: During morning twilight, Venus is near the V of Taurus in the eastern sky before sunrise.

Before sunrise this morning, the action continues in the eastern sky as Venus passes the V of Taurus, made by Aldebaran and the Hyades star cluster. The shape is tipped on its side in the eastern at this season

The bright Buck Moon, low in the southwest, spreads its light across the sky, casting a veil across dimmer stars.

An hour before sunrise, the Morning Star is nearly 20° above the eastern horizon, 4.0° above Aldebaran.  In this moonlight look for the Pleiades star cluster, 9.6° above the planet.

Binocular View

Binocular View - Venus and V of Taurus, July 9-15
2025, July 9-15; Through a binocular Venus moves past the V of Taurus, made by Aldebaran and the Hyades star cluster.

Through a binocular spot Venus 1.6° to the upper left of Delta1 Tauri (δ1 Tau) and 1.7° from Delta 2 Tauri (δ2 Tau) in the Hyades.

Each morning, note Venus’ place in the sky compared to the V of Taurus.

Saturn, July 11, 2025
Chart Caption – 2025, July 11: Saturn is about halfway up in the sky from horizon to overhead during morning twilight.

Saturn, considerably dimmer than Venus, is halfway up in the south-southeast. Among Pisces’ dim stars, the Ringed Wonder begins the illusion of retrograde in two mornings.  It is above the star Deneb Kaitos, Cetus’ tail, which is about halfway from the horizon to the planet.

Tonight look for Mars in the western sky as it begins its long slide into brighter evening twilight and ending with its solar conjunction.

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