"Survivor" Black Holes May Be Mid-Sized
Updated: 2010-04-29 22:28:07
This composite image of M82 shows Chandra X-ray Observatory data in blue, optical data from Hubble in green and orange, and infrared data from Spitzer in red.
This composite image of M82 shows Chandra X-ray Observatory data in blue, optical data from Hubble in green and orange, and infrared data from Spitzer in red.
In this issue we outline a desperate shortage of accelerator scientists; walk you through the process of making a discovery at the Large Hadron Collider; and debut an original science-fiction story written especially for SLAC.
People sometimes ask, “Is the universe a black hole?” Or worse, they claim: “The universe is a black hole!” No, it’s not, and it’s worth getting this one straight.
If there’s any quantitative reasoning behind the question (or claim), it comes from comparing the amount of matter within the observable universe to the radius [...]
We’re constantly being peppered by showers of debris from cosmic rays colliding with atoms in the atmosphere. Cosmic rays aren’t actually rays, of course, they’re particles; ninety percent are protons, the nuclei of hydrogen atoms, and most of the rest are heavier nuclei like iron. Some originate from our own sun but most come from farther off, from the Milky Way or beyond.
Pockets of dark matter litter roughly 25 percent of the universe like patches of static you hit while surfing the radio dial: definitely there but of unclear origin.
Through a process of elimination, Chicagoland Observatory for Underground Particle Physics collaborators say they have found a way to use sound to tune in dark matter passing through [...]
Two new and independent studies have put Einstein's General Theory of Relativity to the test like never before. These results show Einstein's theory is still the best game in town.
Two different teams have reported using Chandra observations of galaxy clusters to study the properties of gravity on cosmic scales and test Einstein's theory of General Relativity.
A new image from NASA's Chandra X-ray Observatory and Spitzer Space Telescope shows the dusty remains of a collapsed star.
This is a composite image of NGC 1068, one of the nearest and brightest galaxies containing a rapidly growing supermassive black hole.