Answer:
Galileo was known for being a astronomer. His greatest achievement was for discovering 4 moons of Jupiter. His work also fought conflict with the Catholic Church.
Hope that helps:D
Answer:
Most research uses both primary and secondary sources. They complement each other to help you build a convincing argument. Primary sources are more credible as evidence, but secondary sources show how your work relates to existing research.
2017 is when it started bruh
