Question

1. who was the first person to look through a telescope and realize brunos lucky guess about the universe was right? 13. according to science, how did the universe begin? 14. what is a supernova? 15. how old is our sun? 16. if all of time is condensed into one calendar year, when did humans enter the picture? 17. write down two things that surprised you about the development of humanity.

Explanation:

1. Galileo Galilei was the first to use a telescope for astronomical observations and support ideas related to the universe similar to those Bruno had guessed at.
2. The widely - accepted scientific theory is the Big Bang, where the universe started from a singularity and has been expanding ever since.
3. A supernova is a powerful and luminous explosion of a star, releasing a huge amount of energy and elements into space.
4. The sun is about 4.6 billion years old.
5. If all of time is condensed into a year, humans would enter the picture very late, around December 31st. For example, in some such analogies, modern humans might appear just a few minutes before the end of the "cosmic year".
6. Answers may vary. Some might be surprised by how quickly human civilization has developed compared to the long history of the Earth, or by the complexity of human evolution from early hominids.

Answer:

1. Galileo Galilei
2. The Big Bang
3. A powerful explosion of a star
4. About 4.6 billion years old
5. Very late in the "cosmic year" (e.g., around December 31st)
6. Varies (e.g., rapid development of civilization, complexity of human evolution)