Archive for the ‘cosmology’ category: Page 355
Sep 10, 2018
Galaxy Punches Through Neighbor to Spawn Giant Ring of Black Holes
Posted by Genevieve Klien in category: cosmology
New observations from NASA’s Chandra X-ray Observatory reveal a very bright source of X-rays that is likely powered by either a ring of stellar-mass black holes or neutron stars located 300 million light-years from Earth.
Sep 9, 2018
Taking the First Picture of a Black Hole
Posted by Genevieve Klien in category: cosmology
Sep 6, 2018
Scientist Passed Over for Nobel Wins $3M, Donates It
Posted by Genevieve Klien in categories: cosmology, physics
Jocelyn Bell Burnell was a PhD student at Cambridge University some five decades ago when she made an astronomical discovery while reviewing data from a radio telescope: faint, repeating pulses of radio waves.
These signals came to be known as pulsars, a type of neutron star described by Scientific American as “a city-sized collapsed core of a massive sun that is made of degenerate matter and throws off lighthouse-like beams of radio waves.” The discovery was a leap forward: It pointed to the existence of black holes, provided evidence for gravitational waves, and much more.
It also yielded a 1974 Nobel Prize—but not for Bell Burnell. Instead, the prize went to Antony Hewish, Bell Burnell’s PhD supervisor, the Guardian reports.
Continue reading “Scientist Passed Over for Nobel Wins $3M, Donates It” »
Sep 5, 2018
Jet Of Material From Neutron Star Collision Appears To Eclipse Light Speed
Posted by Genevieve Klien in categories: cosmology, physics
When two neutron stars collided in August of 2017, the resulting black hole emitted a jet of cosmic material at extremely high speed.
As reported by the Inquisitr in June 2018, the collision of two neutron stars in the cosmic event known as GW170817, perceived by humans in August of last year, appears to have created a black hole. It also appears to have created a jet of superfast material, detected and measured by a collection of National Science Foundation radio telescopes, and the results of those measurements seemed to show the jet moving at nearly four times the speed of light, an impossibility in our current understanding of the laws of physics.
In observations less than half a year apart, the jet seemed to cover a distance greater than two light years. Since a light year is defined as the distance light can travel through a vacuum in a year, that would indicate that the jet was hurtling toward Earth at nearly four times the speed of light, according to Space.com.
Continue reading “Jet Of Material From Neutron Star Collision Appears To Eclipse Light Speed” »
Aug 31, 2018
Our universe could be one of an infinite number of universes
Posted by Shailesh Prasad in category: cosmology
Aug 30, 2018
Scientists Discover Possible First Proof of Parallel Universes
Posted by Michael Lance in category: cosmology
We can’t entirely rule out that the Spot is caused by an unlikely fluctuation explained by the standard model.
A study on the strange Cold Spot in space may prove that we live in a multiverse.
Aug 29, 2018
Ancient ‘Monster Galaxy’ Is Forming Stars a Thousand Times Faster Than the Milky Way
Posted by Genevieve Klien in category: cosmology
Chile’s Atacama Large Millimeter/submillimeter Array (ALMA) has observed a galaxy that looks nothing like what researchers expected. It’s forming stars at an absolutely incredible rate.
The “Monster Galaxy”, also known as COSMOS-AzTEC-1, formed just 2 billion years after the Big Bang, and it turns more than a thousand Suns worth of gas into stars each year. Scientists still don’t understand these early galaxies very well, but now they have some new information that can shed light on why they form stars so blisteringly fast.
Aug 28, 2018
Scientists may have discovered the very first ‘ghost’ black hole from a different universe
Posted by Genevieve Klien in category: cosmology
It’s common knowledge that, because of the speed at which light travels, we can see things in space that aren’t even there anymore. If we peer at a distant galaxy we’re really only seeing what the objects within it looked like when the light itself was beaming in our direction. If the galaxy is a thousand light-years away, we’re seeing what the galaxy looked like a thousand years ago.
Now, researchers believe that they may be able to use a similar technique to search for black holes that don’t exist anymore. The only difference is that the black holes aren’t just from long ago, they’re from an entirely different version of the universe. Woah.
A research team comprised of scientists from Oxford University, the University of Warsaw, and the New York Maritime College, believe they have evidence that points to the leftovers of a black hole that existed in a universe that preceded the one we’re currently living in. However, rather than visible light, the black holes leave behind what is known as cosmic microwave background radiation, or (CMB).
Aug 27, 2018
To Test Einstein’s Equations, Poke a Black Hole
Posted by Genevieve Klien in categories: cosmology, information science, mathematics
Researchers make significant progress toward proving a critical mathematical test of the theory of general relativity.
- By Kevin Hartnett, Quanta Magazine on August 27, 2018