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News for Norther Colorado and the world

Thursday, October 23, 2014

EarthSky Tonight—Tonight September 4, Orion the Hunter well up before dawn in September

Courtesy of EarthSky
A Clear Voice for Science
www.EarthSky.org

phase Sep 4 EarthSky Tonight—Tonight  September 4,  Orion the Hunter well up before dawn in September 10sep04 430 EarthSky Tonight—Tonight  September 4,  Orion the Hunter well up before dawn in September Mike wrote, “I noticed on your site that Orion returned to the predawn sky in late July. You called it the ghost of the summer dawn. Due to cloudy skies and other conditions, I was not able to see it until August 6. When will Orion return to the evening sky?”

Mike, Orion the Hunter is always behind the sun as seen from Earth in June. It comes back to the predawn sky every year in late July. By early September, Orion is rising in the wee hours and is well up in the southeast an hour before dawn, as shown on today’s chart.

Orion will soon be up by midnight, then 10 p.m. . . . and by December, you will find it rising in early evening.

Bright star in east in the evening? Might be planet Jupiter, nearly at its closest since 1951.

There is nothing unusual about Orion’s shift from the predawn to the evening sky. This constellation is simply following the westward shift of all the stars, caused by Earth’s orbit around the sun. As we orbit the sun, our night sky points out on an ever-changing panorama of the Milky Way galaxy. Our orbit causes all the stars to rise approximately 4 minutes earlier each day.

If you are an early riser, look to the southeast and spot the Orion the Hunter roaming the September predawn sky.

deborahbyrd.thumbnail EarthSky Tonight—Tonight  September 4,  Orion the Hunter well up before dawn in September Written by Deborah Byrd




Orion Nebula EarthSky Tonight—Tonight  September 4,  Orion the Hunter well up before dawn in September
Orion Nebula



Astronomy Picture of the Day from NASA/JPL

CHANDRA Photo Album

U.S. Naval Observator Astronomical Information center

Universe Today

StarDate Online

Sky and Telescope

National Geographic

Space Com

Amazing Space

The York County Astronomical Society

Scope City

James S McDonnell Planetarium

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