Archive for the ‘cosmology’ category: Page 363
Apr 13, 2018
Wormhole Entanglement and the Firewall Paradox
Posted by Genevieve Klien in categories: cosmology, quantum physics
A bold new idea aims to link two famously discordant descriptions of nature. In doing so, it may also reveal how space-time owes its existence to the spooky connections of quantum information.
Apr 12, 2018
Trouble Detected in Infamous Dark Matter Signal
Posted by Genevieve Klien in category: cosmology
Apr 11, 2018
How gravitational waves might help fundamental cosmology
Posted by Genevieve Klien in categories: cosmology, physics
New observations could help us understand discrepancies in measurements of the expansion of the Universe.
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.