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Astronomy

Here’s the European Space Agency’s 3-D map of over a billion stars

ZME Science: The catalog features multiple types of data, which means it can be used by astronomers working in different fields to understand the evolution of stars in our galaxy (and stars in general). Read More ›

Eric Hedin and our cultural moment

UD welcomes our new News anchor. As a starter for reflection, let’s clip from his current book: Naturalism holds that nature is all there is,and that the order of the universe, including the order of the living world,is merely the result of the laws of nature, or, as some put it, of “chance andnecessity.” [Jerry] Coyne went a step further. He insisted that this view cannoteven be questioned in a public university science course—or to be moreprecise, cannot be questioned even in a cross-disciplinary course on sci-entific discoveries and their larger cultural implications.But the question as to whether philosophical naturalism is true istoo important to shove into a corner. This and other closely related ques-tions are precisely those anyone striving Read More ›

FOR REFERENCE: Globular Cluster M55 as illustrating apparent aging of our galaxy (& cosmos)

It seems helpful to illustrate cosmological scale apparent aging as stars depart main sequence: An idealised, Hertzsprung-Russell chart for Hydrogen-rich balls prone to become fusion furnaces is: Here is a comparative plot (for open clusters), constructing a “clock” by projected pattern as a cluster ages, in effect seeing what is left as a candle burns down: This can be taken as illustrative of how our cosmos shows entropy-associated aging on the grand scale. Further illustrative, here is a NASA-derived cosmological timeline model, integrated with fine tuning: Speaking of fine tuning, Barnes et al summarise: All of this ties to core thermodynamics: Food for thought. END

Is Sarah Salviander going to make a difference in science?

Of herself she says: Astrophysicist. I have a PhD in Astrophysics and worked for many years in academia as a scientific researcher. Though I am currently focused on ministry work, I am still active in astrophysical research. Visit my research page here. Read More ›

What’s the story with the strange signals from the galaxy’s center?

Astronomers: “The brightness of the object also varies dramatically, by a factor of 100, and the signal switches on and off apparently at random. We’ve never seen anything like it.” (We will soon be in a better position to find out what it is because the Square Kilometer Array (SKA) radio telescope will be commissioned within the decade.) Read More ›

Pluto is still planet in the eyes of many

Grossman: "... since 2006, we’ve learned that Pluto has an atmosphere and maybe even clouds. It has mountains made of water ice, fields of frozen nitrogen, methane snow–capped peaks, and dunes and volcanoes. “It’s a dynamic, complex world unlike any other orbiting the sun,” journalist Christopher Crockett wrote in Science News in 2015 when NASA’s New Horizons spacecraft flew by Pluto." Read More ›