what is the universe made of?
It’s a question humanity has asked since the first humans looked up at the stars:
What is dark matter and why can’t we see it?
If you’ve ever gazed up at the night sky, you’re seeing only a small fraction
What is dark matter and dark energy?
categories: Physics We often hear about dark matter and dark energy as two of the biggest
What Is Dark Matter? The Evidence, The Leading Ideas, and What We Still Don’t Know
Dark matter is unseen mass inferred from gravity. Learn the key evidence (galaxy rotation, lensing, clusters), what it might be, and why it’s hard to detect.