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Astronomy Picture of the Day - Big Dipper over Pyramid Mountain
NASA ^ | 10 Dec, 2023 | Image Credit & Copyright: Steve Cullen

Posted on 12/10/2023 11:28:50 AM PST by MtnClimber

Explanation: When did you first learn to identify this group of stars? Although they are familiar to many people around the world, different cultures have associated this asterism with different icons and folklore. Known in the USA as the Big Dipper, the stars are part of a constellation designated by the International Astronomical Union in 1922 as the Great Bear (Ursa Major). The recognized star names of these stars are (left to right) Alkaid, Mizar/Alcor, Alioth, Megrez, Phecda, Merak, and Dubhe. Of course, stars in any given constellation are unlikely to be physically related. But surprisingly, most of the Big Dipper stars do seem to be headed in the same direction as they plough through space, a property they share with other stars spread out over an even larger area across the sky. Their measured common motion suggests that they all belong to a loose, nearby star cluster, thought to be on average only about 75 light-years away and up to 30 light-years across. The cluster is more properly known as the Ursa Major Moving Group. The featured image captured the iconic stars in 2017 above Pyramid Mountain in Alberta, Canada.


TOPICS: Astronomy; Astronomy Picture of the Day; Science
KEYWORDS: nasa
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To: ProtectOurFreedom

It’s a good thing that they never ask me anything.


21 posted on 12/10/2023 12:24:28 PM PST by Sacajaweau ( )
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To: Zuriel
<---- doesn't look anything like a woman.
22 posted on 12/10/2023 12:30:35 PM PST by Telepathic Intruder
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To: Telepathic Intruder

And just a split second glance of that sicko is a split second too much.


23 posted on 12/10/2023 12:35:52 PM PST by Zuriel (Acts 2:38,39....Do you believe it?)
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To: MtnClimber

Wow.


24 posted on 12/10/2023 12:40:06 PM PST by No name given (Anonymous is who you’ll know me as)
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To: Zuriel

That’s why I reduced the size just enough to recognize without losing your lunch (hopefully).


25 posted on 12/10/2023 12:45:01 PM PST by Telepathic Intruder
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To: Telepathic Intruder
Next time reduce it this much..


26 posted on 12/10/2023 1:55:03 PM PST by dragnet2 (Diversion and evasion are tools of deceit)
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To: ProtectOurFreedom

Seeing the “Big Dipper.” and seeing “Dubhe.”reminds me of what my USAF Navigator would tell me which stars he would use for a three star, “fix.”
in Navigator school. They were, Deneb, Dubhe, and DALLAS!”

Note: You can’t use a city on Earth to determine your position using, “Celestial” Navigation.
Thank you to MtnClimber!

Grins....


27 posted on 12/10/2023 5:52:31 PM PST by BatGuano (2020 = Stolen Election. Believe it! Molon Labe.)
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To: BatGuano

PS. RIP B-52 Navigator Captain Bill O’Neill, USAF!


28 posted on 12/10/2023 6:01:01 PM PST by BatGuano (2020 = Stolen Election. Believe it! Molon Labe.)
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