Dark Matter -

The exact identity of dark matter remains unknown, though several leading theories exist: The quest for dark matter with Matt Bothwell

In the 1970s, astronomer Vera Rubin observed that stars at the edges of spiral galaxies were moving just as fast as those near the center. According to Newtonian physics, they should have been moving much slower or flying off into space unless some unseen mass was holding them in place. Galaxy Clusters Dark Matter

Massive objects warp the space around them, bending light like a lens. By observing how light from distant galaxies is distorted, astronomers can map the "invisible" mass causing the effect, which consistently points to vast reservoirs of dark matter. 🧪 What Could It Be? The exact identity of dark matter remains unknown,

It does not interact with electromagnetic forces, meaning it is completely transparent. By observing how light from distant galaxies is

As early as the 1930s, Swiss astronomer Fritz Zwicky noticed that galaxies in the Coma Cluster were moving far too fast to be held together by visible matter alone. He coined the term "dunkle Materie" (dark matter) to describe the missing mass. Gravitational Lensing

Scientists discovered dark matter not by seeing it, but by noticing that the universe's "math" didn't add up without it. Galaxy Rotation Curves

Most evidence suggests dark matter is "cold," meaning its particles move slowly relative to the speed of light. 🔭 Key Evidence