Date: 9/06/2020 21:56:05
From: Tau.Neutrino
ID: 1570572
Subject: A New Telescope is Ready to Start Searching for Answers to Explain Dark Energy

A New Telescope is Ready to Start Searching for Answers to Explain Dark Energy

Back in 2015, construction began on a new telescope called the Dark Energy Spectroscopic Instrument (DESI). Later this year, it will begin its five-year mission. Its goal? To create a 3D map of the Universe with unprecedented detail, showing the distribution of matter.

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Date: 10/06/2020 19:46:22
From: mollwollfumble
ID: 1571047
Subject: re: A New Telescope is Ready to Start Searching for Answers to Explain Dark Energy

Tau.Neutrino said:


A New Telescope is Ready to Start Searching for Answers to Explain Dark Energy

Back in 2015, construction began on a new telescope called the Dark Energy Spectroscopic Instrument (DESI). Later this year, it will begin its five-year mission. Its goal? To create a 3D map of the Universe with unprecedented detail, showing the distribution of matter.

more…

I keep forgetting that DESI isn’t already in operation. Later this year means it will be in operation before the James Webb (Launch scheduled Mar 2021).

> 5,000 fiber-optic eyes. It’ll complete a set of 5,000 galaxy observations every two minutes. DESI will repeatedly map the distance to the same 35 million galaxies and 2.4 million quasars, covering about one-third of the sky.

OK. Looking forward to the resulting catalog.

How big is the mirror? Took some finding. “3.8m diameter”. Not in the top 28 largest optical telescopes. And don’t expect pretty pictures from it.

Anyone guess the odds of seeing something sufficiently weird that it could be an alien civilization?

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