The oldest light you can see, from Patagonia

2 people can be seen in a night scene with the Andromeda galaxy, many stars and a blush of red and blue tint in the sky
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2 people can be seen in a night scene with the Andromeda galaxy, many stars and a blush of red and blue tint in the sky
'The Andromeda Galaxy at 2.5 million light years away is the most distant object easily seen with your unaided eye. Given its distance, light from Andromeda is likely also the oldest light that you can see.'

[click to embiggen]

Photo: Gerardo Ferrarino

source: https://apod.nasa.gov/apod...

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