Hiranya Peiris
speaker
454 appearances
2 recordings
2 series
first heard May 2026
last heard 25 May
Hiranya Peiris’s voice in public audio — every appearance, attributed to the second.
Trend
recordings per month · last 12 monthsRecordings per month over the last 12 months — 2 in all, peaking in May 2026 with 2.
Appearances
So according to inflation, if you represented the universe as a symphony, it should have more bass notes than treble notes.
And a simple idea of the origin of structure tells you that there should be equal amounts of bass notes and treble notes.
But the inflationary prediction was tested and found to be correct by Planck.
Yeah, so this is kind of a side project, but my favourite dark matter candidate is called the axion.
Axion particles, if they exist, are very light.
So they behave less like particles and more like a radio wave permeating the universe.
And so you can kind of do a tabletop experiment in a university lab to try to detect this radio wave.
The experiment is like a radio receiver.
We have to tune it and find the right frequency, but we don't know what the frequency is.
It's in a range.
Yes.
So we need to tune into it.
This is the biggest digital camera ever built.
Each image is 3.2 billion pixels.
The first images are just astonishing.
So not only are they super high resolution, but the depth is very great so that you can see much, much further into the universe.
So when you look at pictures of galaxies, for example, they look super crisp.
But you can also see the faint outskirts of these galaxies where gas is accumulating everywhere.
which is going to feed into future generations of stars that we couldn't see before.
And also because it is a time lapse, you can see exploding stars in the universe.
Showing 181–200 of 454 · page 10 of 23
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