The majority of the energy in our Universe went completely undiscovered until the late 1990s, and scientists still don't know what it is. Only 5% of the Universe, in terms of energy, is made out ...

The universe is filled with strange and surreal phenomena that challenge our understanding of reality. Dive into 10 of the most fascinating paradoxes in science that will make you question everything ...

Most of the Universe is Missing—A 'Dark Fluid' With Negative Mass Could Explain Why Published Dec 05, 2018 at 8:08 AM EST Updated Dec 05, 2018 at 8:27 AM EST By ...

Why the Universe Needs Dark Energy. Season 2 Episode 27 | 9m 33s Video has Closed Captions | CC. We know the universe will continue to expand forever, so now we can begin to complete the first ...

We see a lot of space photos each week and they are always beautiful and unique. But some images make you stop and ponder how stunning and strange the universe really is. Last week brought news of ...

A brief history of the missing mass in the Universe, and why dark matter is the only option -- right now -- that makes sense.

We also tested interacting dark energy-dark matter models, where dark energy interacts with dark matter, and modified gravity models, where gravity acts differently at different times in the universe.

In some scenarios, these black holes would be even smaller and would be numerous enough to be dark matter—the unseen stuff that’s thought to make up about a quarter of the universe.