Posted on Aug 19, 2021

APOD: 2021 August 19 - Bright Meteor, Starry Sky

Maj William W. 'Bill' Price

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Good morning, Rallypoint. Today's Astronomy Picture of the Day (APOD) is titled "Bright Meteor, Starry Sky." This scene was captured over Portugal the evening of August 12th. The meteor is moving from right to left, and appears between the stars Altair (constellation Aquilla) and Deneb (constellation Cygnus). The Milky Way is spread across the background of the shot. The greenish hue indicates that the meteor was moving fast enough to ionize oxygen present in the upper atmosphere (~100 km/62 miles). How fast? About 37 miles per second.

APOD: 2021 August 19 - Bright Meteor, Starry Sky

Posted from apod.nasa.gov

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LTC Stephen F.

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don mclean - vincent

A beautiful song my favourite

Thank you my friend Maj William W. 'Bill' Price for posting the NASA Astronomy Picture of the Day (APOD) for Thursday, August 19, 202 entitled "Bright Meteor, Starry Sky."

Image: Bright Meteor, Starry Sky Image Credit & Copyright - Miguel Claro (TWAN, Dark Sky Alqueva)

APOD Background
"Explanation: Plowing through Earth's atmosphere at 60 kilometers per second, this bright perseid meteor streaks along a starry Milky Way. Captured in dark Portugal skies on August 12, it moves right to left through the frame. Its colorful trail starts near Deneb (alpha Cygni) and ends near Altair (alpha Aquilae), stars of the northern summer triangle. In fact this perseid meteor very briefly outshines both, two of the brightest stars in planet Earth's night. The trail's initial greenish glow is typical of the bright perseid shower meteors. The grains of cosmic sand, swept up dust from periodic comet Swift-Tuttle, are moving fast enough to excite the characteristic green emission of atomic oxygen at altitudes of 100 kilometers or so before vaporizing in an incandescent flash."

don mclean - vincent
https://www.youtube.com/watch?v=4wrNFDxCRzU

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