Science
New Horizons Spacecraft Answers Question: How Dark Is Space? – Newswise
How dark is the sky, and what does that tell us about the number of galaxies in the visible universe? A team of scientists has used observations by NASA’s New
Newswise — How dark does space get? If you get away from city lights and look up, the sky between the stars appears very dark indeed. Above the Earth’s atmosphere outer space dims even further, fading to an inky pitch-black. And yet even there, space isn’t absolutely black. The universe has a suffused feeble glimmer from innumerable distant stars and galaxies.
New measurements of that weak background glow show that the unseen galaxies are less plentiful than some theoretical studies suggested,…
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