If dark matter is discovered through one of these experiments or another that hasn’t yet been dreamed up, it could essentially shed a light on an entire hidden universe that for now remains a mystery, said Dr. Tracy Slatyer, a theoretical particle physicist at the Massachusetts Institute of Technology.

Dark comets are comets that are so small, fast and/or chemically rare that they are difficult to see from Earth

The cosmos began expanding with the Big Bang but then around 10 billion years later it strangely began to accelerate thanks to a theoretical phenomenon termed dark energy. Credit: NASA One of science’s biggest mysteries is dark energy.

Dark matter's mass limit increased by an order of magnitude, impacting our understanding of the universe's invisible substance.

The Nancy Grace Roman Space Telescope team at NASA has completed the integration of the telescope and its instruments onto the carrier, a significant milestone in the assembly process. With the Coronagraph Instrument and the Optical Telescope Assembly in place,

Find out about the recent developments regarding the Roman Space Telescope and how they might bring us closer to understanding the universe.

Dark matter, an enigmatic and invisible substance that constitutes approximately 85% of the mass in the universe, remains one of the most compelling mysteries in modern physics. Despite its widespread presence in the cosmos,

Some of this stuff is known as mysterious dark matter, others are things like dark comets, which as their name suggests, are far more difficult to see from Earth than something like Tsuchinshan-Atlas.

In case dark matter didn't seem mysterious enough, a new study proposes that it could have arisen before the Big Bang.

Just how long has the universe been around? Scientists estimate the universe is 13.8 billion years old, with an uncertainty of plus or minus just two percent. But how do we know?

Scientists with NASA are launching enormous balloons, the size of a football stadium, from the Antarctic ice. They're carrying experiments on dark matter and other mysteries.