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Archive for the ‘cosmology’ category: Page 360

Apr 11, 2018

How gravitational waves might help fundamental cosmology

Posted by in categories: cosmology, physics

New observations could help us understand discrepancies in measurements of the expansion of the Universe.

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Apr 11, 2018

The Case for Putting Aside Dark Energy to Reevaluate General Relativity

Posted by in category: cosmology

If dark energy is just a grand illusion – as some suggest – then rethinking our interpretation of the basic principles of general relativity in a complex universe is crucial.

The Case for Putting Aside Dark Energy to Reevaluate General Relativity

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Apr 11, 2018

Beyond the Milky Way: The sublime beauty of our galactic neighbors

Posted by in category: cosmology

Over the 20th century our knowledge of the universe expanded, as did our technological ability to capture images its outer reaches. The Hubble Space Telescope allowed us to pull back the curtains on the deep limits of the universe and the new millennium promises an even higher definition imaging with the James Webb Space Telescope.

Despite ongoing delays, the JWT promises to take us even closer to the edge of time and space, delivering a new perspective on some of the oldest galaxies in the universe, potentially just a few hundred million years after the big bang.

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Apr 8, 2018

How Scientists Listen to Black Holes Colliding A Billion Years Ago

Posted by in categories: cosmology, physics

Scientists at LIGO detected billion-year-old gravitational waves, and they are expecting to detect a lot more. This is an excerpt from ‘The Little Book of Black Holes’ by Frans Pretorius and Steven S. Gubser, reprinted with permission from the publisher Princeton University Press.

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Apr 8, 2018

Study Suggests You Can Survive Certain Black Holes

Posted by in categories: cosmology, futurism

A black hole could strip your past and give you infinite futures, according to a new study.

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Apr 7, 2018

Blue Sky Science: Are there wormholes that lead to other galaxies?

Posted by in categories: cosmology, particle physics, quantum physics, science

In principle, a wormhole-like scenario is possible, but a wormhole tends to close before objects or other matter could pass through it. As far as we know, it’s unlikely we could construct a wormhole that stays open long enough for us to get to a distant part of the universe.

That’s really the issue: Can you keep a wormhole open?

Continue reading “Blue Sky Science: Are there wormholes that lead to other galaxies?” »

Apr 7, 2018

The Milky Way’s Center Is a Cornucopia of Black Holes

Posted by in category: cosmology

Astronomers have detected evidence of a handful of the likely thousands of light-gobbling objects in the middle of the galaxy.

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Apr 7, 2018

The Most Precise Measurement of Antimatter Yet Deepens the Mystery of Why We Exist

Posted by in categories: cosmology, physics

Scientists have made the most precise measurement of antimatter yet, and the results only deepen the mystery of why life, the universe, and everything in it exists.

The new measurements show that, to an incredibly high degree of precision, antimatter and matter behave identically.

Yet those new measurements can’t answer one of the biggest questions in physics: Why, if equal parts matter and antimatter were formed during the Big Bang, is our universe today made up of matter?

Continue reading “The Most Precise Measurement of Antimatter Yet Deepens the Mystery of Why We Exist” »

Apr 7, 2018

Mach Effect Propellantless drive awarded NASA NIAC phase 2 study

Posted by in categories: cosmology, physics, space travel

James Woodward and the Space Studies Institute has a Phase 2 NASA Innovative Advanced funded study. They are looking at the implementation of an innovative thrust producing technology for use in NASA missions involving in space main propulsion.

Mach Effect Gravity Assist (MEGA) drive propulsion is based on peer-reviewed, technically credible physics. Mach effects are transient variations in the rest masses of objects that simultaneously experience accelerations and internal energy changes. They are predicted by standard physics where Mach’s principle applies as discussed in peer-reviewed papers spanning 20 years and a recent book, Making Starships and Stargates: the Science of Interstellar Transport and Absurdly Benign Wormholes published in 2013 by Springer-Verlag.

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Apr 4, 2018

A second ‘Big Bang’ could end our universe in an instant — and it’s all because of a tiny particle that controls the laws of physics

Posted by in categories: chemistry, cosmology, particle physics, quantum physics

Our known universe may end the same way it was created: With a big, sudden bang.

That’s according to new research from a group of Harvard physicists, who found that the destabilization of the Higgs Boson — a tiny quantum particle that gives other particles mass — could lead to a huge explosion of energy that would consume everything in the known universe.

The energy released by the event would destabilize the laws of physics and chemistry.

Continue reading “A second ‘Big Bang’ could end our universe in an instant — and it’s all because of a tiny particle that controls the laws of physics” »