Science!

Scientists have found the best measurement yet of how much the universe glows.

The universe has what researchers liken to a cosmic night light: a very dim, faint glow that spreads right through the cosmos.

And researchers have now found how bright that is, more precisely than ever before. The light – known as the cosmic optical background – is 100 billion times fainter than the sunlight that reaches the Earth’s surface.

That makes it impossible to see with the naked eye, and very difficult to see even with advanced telescopes. As such, they had to use Nasa’s New Horizons spacecraft, which flew past Pluto in 2015 and is now billions of miles from Earth.

That allowed researchers to get away from the light that surrounds Earth, and which reflects off the dust and debris that is near to our planet. With that, they could get a view deep into the universe.……

https://www.independent.co.uk/space/universe-cosmos-glow-nasa-b2607076.html