From EarthSky: “Somber Betelgeuse in Orion’s shoulder”



February 11, 2018



Tonight, look for ruddy-hued Betelgeuse, one of the sky’s most famous stars. Kids especially like Betelgeuse, because its name sounds so much like beetle juice. The movie by that same name perpetuated this pronunciation.

But astronomers pronounce it differently. We say BET-el-jews.

People have described this star as somber or sometimes even grandfatherly. That may be because of Betelgeuse’s ruddy complexion, which, as a matter of fact, indicates that this star is well into the autumn of its years.

Betelgeuse is no ordinary red star. It’s a magnificently rare red supergiant. According to Professor Jim Kaler – whose website Stars you should check out – there might be only one red supergiant star like Betelgeuse for every million or so stars in our Milky Way galaxy.

At this time of year, Betelgeuse’s constellation – Orion the Hunter – ascends to its highest point in the heavens around 8 to 9 p.m. local time – that’s the time on your clock no matter where you are on the globe – with the Hunter symbolically reaching the height of his powers.

As night passes – with Earth turning eastward under the stars – Orion has his inevitable fall, shifting lower in the sky by late evening.

Orion slowly heads westward throughout the late evening hours and plunges beneath the western horizon in the wee hours after midnight.

Orion Nebula ESO/VLT

Bottom line: The ruddy star Betelgeuse depicts Orion’s shoulder. In mid-February, Orion reaches his high point for the night around 8 to 9 p.m. local time.

See the full article here .

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Deborah Byrd created the EarthSky radio series in 1991 and founded in 1994. Today, she serves as Editor-in-Chief of this website. She has won a galaxy of awards from the broadcasting and science communities, including having an asteroid named 3505 Byrd in her honor. A science communicator and educator since 1976, Byrd believes in science as a force for good in the world and a vital tool for the 21st century. “Being an EarthSky editor is like hosting a big global party for cool nature-lovers,” she says.