A simple explanation of dark matter and antimatter, how they differ, how scientists study them, and why both are important to understanding the universe.

Since the expansion of the Universe was first found to accelerate nearly 20 years ago, scientists have yearned for a compelling, simple, and testable explanation. Yet as more and more data from ...

Most of what people casually call “the universe” is not where instinct suggests. Stars, planets and glowing gas clouds are ...

The first evidence for dark matter were galaxies that behaved as if they had far more matter than could be accounted for by the mass of their stars. Since then, we've found many other indications that ...

Astronomers using data from NASA’s Hubble Space Telescope have observed what appears to be a clump of dark matter left behind from a wreck between massive clusters of galaxies. The result could ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. For about 50 years ...

Most matter in the universe cannot be seen — but its influence on the largest structures in space can. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it ...

Rajendra Gupta receives unconditional research funding from Macronix Research Corporation. He is affiliated with the American Physical Society, Royal Astronomical Society, European Astronomical ...

Science and philosophy have a long, complicated history. Both are human endeavors aimed at articulating the nature of the world. But where the line between them lies depends a lot on perspective and ...

Astronomers have found that some dwarf galaxies may today appear to be dark-matter free even though they formed as galaxies dominated by dark matter in the past. A team led by astronomers at the ...