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Record-Breaking Galaxy Cluster Found
The Bad Astronomer writes "Astronomers are reporting that they have detected the most distant cluster of galaxies ever seen: a mind-smashing 9.6 billion light years away, 400 million light years more distant than the previous record holder. The cluster, handily named SXDF-XCLJ0218-0510, was seen in infrared images by the giant Subaru telescope, and confirmed with spectroscopy and the X-ray detection of million-degree gas (a smoking gun of clusters). Every time astronomers push back the record for clusters, they learn more about the early conditions of the universe, so this cluster will provide insight into how the universe itself changed over the first few billion years after the Big Bang."
How far apart do your measuring points need to be to accurately triangulate the position of something 9.6 billion light years away?
I've abandoned my search for truth; now I'm just looking for some useful delusions.
FTA (Shock I read it!) - Might want to RTFA before you try to bring a joke down with math.
But there’s more. Because clusters are so big and bright, they can be seen really far away. In space, distance means time; the farther away we see an object, the younger the Universe was when the light left that object. In the case of this newly found cluster, the light we see left it 9.6 billion years ago — making it 400 million light years farther away than the next-most distant cluster ever seen. The Universe itself is only 13.7 billion years old, so we’re seeing this structure as it was not too long after it formed.
Current models suggest that the initial inflationary period of the univerise after the big bang was well in excess of the speed of light. WAY in excess actually.
Yes, this implies that there may be galaxies further away than we can see, outside of our horizon of cause or effect. Heady stuff.
If I did my maths right (and that's always doubtful), it's 3.14(+/-) million years away at warp 9.9.
You might want to pack some extra snacks for that trip.
- Pithy comment goes here.
I've always been fascinated by the notion that the parsec is somehow a more universal measurement than the light-year.
Both are based on Earth's orbit, after all.
The light year uses the period.
The parsec uses the diameter, coupled with the purely arbitrary base 60 conventions of the ancient Babylonians .
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