Final answer:
The cosmic microwave background radiation provides evidence of temperature fluctuations in the oldest light in our universe, helping scientists understand its early evolution. Particle accelerators are used to explore subatomic particles and test particle theories, providing experimental evidence about their properties and behaviors.
Step-by-step explanation:
The evidence collected by the cosmic microwave background radiation (CMBR) is observations of the temperature fluctuations in the oldest light in our universe. Satellites like NASA's Cosmic Background Explorer (COBE) and the Wilkinson Microwave Anisotropy Probe (WMAP) have made sensitive and accurate measurements of the CMBR, providing a detailed picture of the temperature fluctuations. This evidence helps scientists understand the early evolution of the universe.
On the other hand, particle accelerators are used to explore the nature of subatomic particles and test predictions of particle theories. By colliding particles at high speeds, particle accelerators provide evidence about the properties and behaviors of particles that cannot be observed directly. This experimental evidence helps deepen our understanding of the fundamental building blocks of matter.