Our telescope could give everyone their own galaxy to study

“Such a large-field view needs the largest camera ever built – the size of a small car” (Image: SLAC National Accelerator Laboratory)

Why do we need another huge telescope?
The wide-angle LSST will map the entire southern hemisphere every few nights. For the first time in human history, we will have detected more galaxies than there are people on Earth. Everyone could have their very own galaxies and stars to study. We’ll find 250,000 supernovae a year, track millions of asteroids every day. Among many other things, it will also teach us about dark matter, clumps of which should distort our images of distant galaxies.

What are the project’s biggest challenges?
LSST is 10 times bigger than anything anyone is even planning, in terms of how much light it will collect and its field of view. The only way to build it is with three mirror …

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