Astrophysics For People In A Hurry -

For centuries, we thought we understood the "stuff" of the universe. However, modern astrophysics reveals that the matter we can see (stars, planets, and us) accounts for only about 5% of the cosmos. The rest is dominated by two invisible giants:

If you want to dive deeper into these "bite-sized" chapters of cosmic history, you can find at retailers like Weller Book Works ($18.95), Walmart (~$10.65), and Barnes & Noble ($18.95). Astrophysics for People in a Hurry: deGrasse Tyson, Neil Astrophysics For People In A Hurry

Fourteen billion years ago, everything we’ve ever known—every star, planet, and person—was packed into a space smaller than the period at the end of this sentence. In an event known as the , this tiny, hot, and incredibly dense point began to rapidly expand. For centuries, we thought we understood the "stuff"

This invisible "frenemy" does not emit or reflect light but provides the gravitational glue that keeps galaxies from flying apart. It makes up roughly 85% of all matter. Astrophysics for People in a Hurry: deGrasse Tyson,

Discovered much later, this mysterious force acts as a "cosmological constant" that is currently driving the universe's expansion to accelerate. The Cosmic Perspective