Andromeda’s Orbiting Dwarf Galaxies – “Point to Something Profound”

Andromeda Galaxy

 

A string of 13 dwarf galaxies in orbit around the massive galaxy Andromeda –remnants of the population of primordial structures that coalesced to form giant galaxies like the Milky Way–are spread across a flat plane more than one million light years wide and only 30,000 light years thick –a distance so vast that they have yet to complete a single orbit. The 2016 discovery suggests that conventional ideas regarding the formation of galaxies are missing something fundamental.

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Stephen Hawking’s Warning –“Treating AI as Science Fiction Would Potentially Be Our Worst Mistake Ever”

 

“We should plan ahead,” warned physicist Stephen Hawking who died March, 2018, and was buried next to Isaac Newton. “If a superior alien civilization sent us a text message saying, ‘We’ll arrive in a few decades,’ would we just reply, ‘OK, call us when you get here, we’ll leave the lights on’? Probably not, but this is more or less what has happened with AI.”

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Fast Facts About Star-Forming Regions of the Universe

Orion Nebula

 

Stars are born in nurseries with a collection of siblings that range in mass but share chemical compositions and dynamic histories. The natal environment containing a large number of “just-born” celestial objects is called a “Star Forming Region”. We find them scattered across the Milky Way primarily in the disk of the Galaxy.  In this article I review four fast facts of these critical components to propagating new generations of stars in the Universe.

Jackie Faherty, astrophysicist at the American Museum of Natural History and Editor at The Daily Galaxy.

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Fast Facts About Moving Groups of Stars in the Milky Way

 

Beta Pictoris

 

Stars are born in nurseries with a collection of siblings that range in mass but share chemical compositions and dynamic histories.  As time passes, the tightly bound nursery that they were born inside dissipates with increased gravitational interactions from outside sources (passing giant molecular clouds or stars).  One form of evolved stellar nurseries is called a “moving group”.  In this article I will review four fast facts about these loosely bound collections of co-moving, co-evolving stars.

Jackie Faherty, astrophysicist at the American Museum of Natural History and Editor at The Daily Galaxy.

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Fast Facts About Molecular Clouds

Molecular Cloud

 

Stars are born in nurseries with a collection of siblings that range in mass but share chemical compositions and dynamic histories. The source of stellar nurseries is a molecular cloud. These structures can span sizes of tens to hundreds of light years across and masses of thousands to millions of solar masses. In this article I review five fast facts about these originators of newborn stars.

Jackie Faherty, astrophysicist, Senior Scientist with the American Museum of Natural History and Editor at The Daily Galaxy.

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