" explores the last five decades in astronomical discovery, as well as the most pressing questions cosmologists are now trying to answer. How did our vision of the universe get completely overturned in just a few decades, and what new surprises might lie just over the horizon? Since the 1970s and the launch of the Voyager missions, scientists have confirmed the existence of planets beyond our solar system, supermassive black holes, and thousands of previously unknown galaxies.
Cosmos" documents what we currently know about dark matter and dark energy, two properties that were only accepted as “real” during the last 50 years. Scientists now believe dark energy is the most powerful force in the universe.