In ancient times, astronomers and philosophers thought that the Earth was the center of the Universe. We know that’s wrong, but is there anything special about where we live?
This week we look at age of the Universe. How old is the Universe, and how do we know?
What are some weaknesses with the standard Big Bang model? What are the horizon and flatness problems? How does accelerated expansion solve these?
Could we use a telescope to see the dinosaurs? What are the challenges to living on Mars?
What is the cosmological constant? How is the expansion of the universe related to quantum fields? How does a vacuum energy produce accelerated expansion?
Lets discuss about Treknology: The Science of Star Trek and more updates including helicopter for mars & stars from the early moment of the universe
What did Hubble really discover? Why does redshift imply an expanding universe? Why is the night sky dark? Why is there so much hydrogen, and how is that connected to the Big Bang?
The speed of light gives us an amazing tool for studying the Universe. Lets study about it.