00:00This is the New Horizons space probe, and it's currently way, way out there.
00:09Right now, the spacecraft is around 60 astronomical units from the sun, or around twice the distance
00:14from the solar system center as Neptune.
00:17And recently, because it's the most advanced bit of tech to ever make it that far away,
00:21it was tasked with measuring just how dark it is way out there in the black.
00:24You may remember back in 2021, New Horizons attempted to measure this very thing and returned
00:29some strange results.
00:31At that time, its instruments detected far brighter background light than expected, something
00:35which has perplexed astronomers ever since.
00:37However, experts say that measuring anything that resides outside the solar system is like
00:42trying to measure a room from within a fishbowl.
00:44Everything gets a bit distorted.
00:46So how much light is out there between galaxies?
00:48Astronomer at the Space Telescope Science Institute, Mark Postman, explained, the results
00:52show that the great majority of visible light we receive from the universe was generated
00:56in galaxies.
00:57Importantly, we also found that there is no evidence for significant levels of light produced
01:02by sources not presently known to astronomers.
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