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2021, Early July Mornings

The Beehive or Praesepe star cluster (National Science Foundation Photo)

The Beehive or Praesepe star cluster (National Science Foundation Photo).

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July Early Mornings, 2021:  Step outside as morning twilight begins, about two hours before sunrise.  Look high in the south for the Summer Triangle, high above Jupiter and Saturn.

Chart Caption – The Summer Triangle – Vega, Altair, and Deneb – are high in the south as morning twilight begins.

by Jeffrey L. Hunt

The Summer Triangle – Vega, Altair, and Deneb – are high in the south as morning twilight begins.  At mid-northern latitudes, this occurs about 2 hours before sunrise.

The pattern’s moniker is from the triangle pattern dotted by the three bright stars.  During early summer the stars begin the night low in the eastern sky after sunset.  As the night progresses, the stars are higher in the sky, reaching south as morning twilight begins.

Vega is part of the constellation Lyra.  The harp is made by a tiny parallelogram attached to a miniature triangle that includes Vega. 

Altair is part of Aquilla.  The pattern somewhat resembles an eagle or at least its wings are evident.

Deneb belongs to Cygnus the Swan.  Sometimes the pattern is known as the Northern Cross.  The star is the tail of the Swan.

In a dark sky, without streetlights or a bright moon, the bird seems to be flying southward along the Milky Way.

Articles and Summaries

2021, October 5: Skinny Moon, Evening Planet Pack

October 5, 2021: Before sunrise, a very thin moon is visible in the eastern sky.  The evening planet pack – Evening Star Venus, Jupiter, and Saturn – are visible at the same time after sundown.

2021, October 3:  Lunar Slice, Evening Planet Pack

October 3, 2021:  Before sunrise, the thin crescent moon is in the eastern sky, to the lower left of Regulus.  After sunset, the planet pack – Evening Star Venus, Jupiter, and Saturn – shine brightly.

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