#physical cosmology

[evilkitten3]

hey star science side of tumblr quick question for y'all

how long does it take an asteroid or comet or whatever to hit earth? like if you can see it, even if it's super tiny, how long does that give you til impact?

[startswithabang]

This Is Why 'Physical Cosmology' Was Long Overdue For The 2019 Nobel Prize

“It is a spectacular fact of modern science that the predictions of theoretical cosmology have been verified and validated by ever-improving observations and measurements. Even more remarkably, when we examine the full suite of the cosmic data humanity has ever collected, one single picture accurately describes every observation together: a 13.8 billion year old Universe that began with the end of cosmic inflation, resulting in a Big Bang, where the Universe is comprised of 68% dark energy, 27% dark matter, 4.9% normal matter, 0.1% neutrinos, and a tiny bit of radiation with no spatial curvature at all.

Put those ingredients into your theoretical Universe with the right laws of physics and enough computational power, and you'll obtain the vast, rich, expanding and evolving Universe we have today. What was initially an endeavor of just a handful of people has now become the modern precision science of cosmology. In the middle of the 20th century, legendary physics curmudgeon Lev Landau famously said, "Cosmologists are often in error but seldom in doubt." With the 2019 Nobel Prize in Physics going to Jim Peebles, perhaps the world will recognize it's long past time to retire Landau's quote. We may live in a dark Universe, but the science of physical cosmology has shed a light on it like nothing else.”

I see you out there. You, the person who’s skeptical of dark matter. You, the one who thinks dark energy must be an enormous cosmological mistake. You, who thinks the Big Bang is a hoax and that inflation is a band-aid for a failing theory. And you, especially you, the one who derides cosmology as a pseudoscience, quoting Landau like his more-than-60-year-old quote is still relevant.

Physical cosmology is a real, robust science. It’s not only my field, but my grand-advisor, Jim Peebles, won the 2019 Nobel Prize for his work pioneering it. Come learn what all the fuss is really about.

[x-15]

Happy mother's day to the original mother, the Big Bang

Thanks for making the universe, you're doing a great job of continuing to expand existence! The CMB still looks beautiful, even if it's getting colder and colder over time, and we still don't know where that one cold spot came from 🌹😘❤

[x-15]

WMAP valentines, so you can tell your lover you love them like the cosmology nerd you probably at least partially are.

(Original image credit to NASA, naturally; editing and awful pickup lines are mine)

[x-15]

Look at this WMAP video I found Pros: - Melodrama - Niel DeGrasse Tyson is there - YouTube's absolutely awful auto-captioning - The "baby picture of the universe" metaphor that seems to pop up half the time you read anything about the CMB - That one classical piece that's used in like, every documentary about space. The Wagner one. You know which one I'm talking about

[astrobiologistdale]

Brief, (early), Book Report

I’ve read only a few books in my life on theoretical physics, my first having been when I was nine years old: “Music Of the Spheres”, by Guy Murchie, given to me by a family friend, Harry S. Merson (Falmouth School Superintendent, back in the 1960’s.)  Mr. Merson, used to like to talk with me about ‘existential’ things, whenever we managed to get together. He told me that he had just finished…

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[forexbeginnersworld]

Forex Analysis & Reviews: 15.07.2021

Forex Analysis & Reviews: 15.07.2021

The pound began to grow actively from the very opening of the European trading session, which is somewhat strange. Of course, the correction was obvious after such a rapid fall. But the fact that it started so quickly and confidently is somewhat surprising. Moreover, inflation in the UK accelerated from 2.1% to 2.5%, even though it was expected to grow only to 2.3%. Moreover, the increase in…

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[brocklrc]

Pioneers of physical cosmology, exoplanets and lithium-ion batteries bag Nobel prizes – Physics World

This week’s podcast is devoted to the big news from Stockholm

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