Explore the Birth of the Universe

The Universe’s Explosive Beginning

The Big Bang Theory explains how the universe began around 13.8 billion years ago. Scientists believe that all matter and energy once existed in a hot, dense state before expanding rapidly. This expansion continues today, shaping galaxies, stars, and planets.

Evidence for the Big Bang includes cosmic microwave background radiation and the movement of galaxies. Observations show that space is still expanding, leading researchers to explore dark energy and the ultimate fate of the cosmos.

Did You Know?

• The universe was once smaller than an atom.
• The cosmic microwave background is leftover heat from the Big Bang.
• The universe is expanding faster than scientists first thought.
• Dark matter and dark energy make up most of the universe’s mass.