Matter ⚡ Fully Tested

Perhaps most humbling is that the "normal" matter we see—stars, planets, and people—accounts for only about . The rest is dark matter (roughly 27%) and dark energy (roughly 68%). Dark matter provides the gravitational "glue" that holds galaxies together, yet it does not emit, absorb, or reflect light, remaining entirely invisible to our current instruments. Conclusion

At the quantum level, the definition of matter becomes even more elusive. According to the , matter is composed of quarks and leptons. Yet, Einstein’s famous equation,

The concept of is the foundational "stuff" of the universe, yet the deeper we look into it, the more it seems to dissolve from solid reality into a complex web of energy and information. At its simplest, matter is defined as anything that has mass and takes up space. However, this definition barely scratches the surface of a reality that spans from the cosmic scale of galaxies to the ghostly realm of subatomic particles. The Evolution of the Atom