Slashdot Mirror
The Astronomer Who Is Building the Largest Map of Space by Volume (vice.com)
An anonymous reader shares a Motherboard report: Astronomer Mark Halpern doesn't come into work every day thinking about the fact that he is leading a team that is creating the biggest map of the universe by volume ever made. But that ambition drives his research. An professor at the University of British Columbia, Halpern is also the principal investigator of the Canadian Hydrogen Intensity Mapping Experiment, or CHIME for short, based at the Dominion Radio Astrophysical Observatory in Penticton, BC. The experiment is a collaboration between UBC, the University of Toronto, McGill, and the National Research Council of Canada. Its centerpiece is a massive halfpipe-shaped telescope that collects radio signals to detect hydrogen intensity, which is a measure of how much hydrogen is clustered in the universe, and if it has moved or spread out. The researchers can then analyse the spread of hydrogen in the universe to determine how much -- and how quickly -- the universe is expanding. "If I make a sound somewhere, it travels away from that sound in a spherical shell," Halpern said. "So we're going to map these big spherical shells as a function of distance from us, and by comparing their present speed to how big they look, that comparison tells us the expansion history of the universe."
There are no links in this article. That's bad.
"Space" is the void in which there is nothing. I would imagine a map of it to be a bit stark.
If it's 1:1 he's gonna need something bigger than the production floor at Hyperspacial Engineering...
https://vimeo.com/109836809
You have the right to remain sentient. If you give up the right to remain sentient, you will be elected to public office
The property which is volume in one relative dimension is time, mass, energy, motion, etc in relation to the perception of the frame of reference of a tangentially entangled observer. There is always a point of tangent neutrality, there must always be a point of tangent neutrality. People often say something like cold doesn't exist, or darkness doesn't exist, it merely the absence of light, logically you can model it either way but neither can exist without a tangent logical neutrality. 2 - 2 equals 0 but zero isn't nothing, zero represents the logical neutrality that provides the limited frame of reference for your logical operation. We've never found absolute void or two of anything because anything is some logical definition or pattern and a logical definition or pattern has to be defined by neutralities.
it's called the universe.
The Universe is sold by weight, not by volume. Some settling may have occurred. You're not getting ripped off...
some o(f you h;ave
...which two are the closest to each other?
i take requests
I guess that if you make an empty map it would be 'mostly correct' already!
Remember when the solar system had nine planets?
The 21 cm (1.4 GHz) hydrogen emission line lies outside the telescope's claimed frequency coverage of 0.4 to 0.8 GHz.