Archive for the ‘cosmology’ category: Page 360
Apr 11, 2018
The Case for Putting Aside Dark Energy to Reevaluate General Relativity
Posted by Genevieve Klien 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.
Apr 11, 2018
Beyond the Milky Way: The sublime beauty of our galactic neighbors
Posted by Genevieve Klien 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.
Apr 8, 2018
How Scientists Listen to Black Holes Colliding A Billion Years Ago
Posted by Genevieve Klien 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.
Apr 8, 2018
Study Suggests You Can Survive Certain Black Holes
Posted by Michael Lance in categories: cosmology, futurism
A black hole could strip your past and give you infinite futures, according to a new study.
Apr 7, 2018
Blue Sky Science: Are there wormholes that lead to other galaxies?
Posted by Genevieve Klien 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 Genevieve Klien in category: cosmology
Astronomers have detected evidence of a handful of the likely thousands of light-gobbling objects in the middle of the galaxy.
Apr 7, 2018
The Most Precise Measurement of Antimatter Yet Deepens the Mystery of Why We Exist
Posted by Genevieve Klien 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?
Apr 7, 2018
Mach Effect Propellantless drive awarded NASA NIAC phase 2 study
Posted by Sidney Clouston in categories: cosmology, physics, space travel
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.
Continue reading “Mach Effect Propellantless drive awarded NASA NIAC phase 2 study” »
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 Genevieve Klien 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.