At night, when that part of Earth is facing away from the Sun, space looks black because there is no nearby bright source of light, like the Sun, to be scattered. If you were on the Moon, which …

How dark is outer space beyond the Solar System? Would two spaceships flying together in the deep, dark Universe be able to see each other? It's difficult to know for sure, but there are …

Oct 19, 2023 · Space is black for two primary reasons — the finite number of stars in the universe and because our ability to see is limited to the visible spectrum of light.

Jun 28, 2023 · Learn the reasons why space is black and how scientists resolve Olber's paradox about how we don't see a sky full of stars.

Aug 30, 2024 · New Horizons, the mission that swept past Pluto in 2015 and then into the deep outer solar system, has now measured the background light of the universe. Artist’s concept …

Oct 18, 2023 · Astronomers hypothesize that in the distant future – a thousand trillion years from now – the universe will go dark, inhabited by only stellar remnants like white dwarfs and black …

Sep 10, 2024 · Now, thanks to data from NASA's New Horizons probe, they have arrived at the best-yet estimate of how dark — or rather, bright — deep space is: 100 billion times dimmer …

Jan 14, 2025 · Dark matter is that invisible glue that keeps stars, dust, and gas together in a galaxy. This mysterious substance makes up the majority of a galaxy's mass and forms the …

Sep 4, 2024 · Researchers managed to measure the light level that pervades all of the universe, a leftover glow from when everything was brand new, bright, and hot, allowing them to get a true …

Jan 20, 2025 · Join our Space Forums to keep talking space on the latest missions, night sky and more! And if you have a news tip, correction or comment, let us know at: …

14 hours ago · The first person to discover that dark matter played an important role in galaxies was astronomer Vera Rubin, who in the 1970s, noticed that the outer parts of local galaxies …

3 days ago · In 2023, the European Space Agency launched the Euclid telescope into space to study how dark matter and dark energy have shaped the structure of the cosmos. And NASA’s …

1 day ago · Observations from the James Webb Space Telescope reveal monster black holes in the early universe that seem to have grown too big, too fast. New research points to a strange …

5 days ago · NASA’s Nancy Grace Roman Space Telescope, set to launch by May 2027, is designed to investigate dark energy, among many other science topics, and will also create a …

Feb 5, 2024 · What Exactly is Dark Energy? Right now, dark energy is just the name that astronomers gave to the mysterious “something” that is causing the universe to expand at an …

Several nebulae in the constellation Orion commonly called deep-sky objects. A deep-sky object (DSO) is any astronomical object that is not an individual star or Solar System object (such as …

Jan 7, 2025 · Some interpretations suggest dark energy could be linked to the energy of the vacuum, while other studies have attempted to describe it as a new, evolving energy field …

Jan 28, 2025 · The nature of dark matter is largely unknown, but it is thought to have mass, which influences particle interactions in the universe through gravity. ... Space.com, Live Science, …