The universe has long fascinated humanity, from ancient astronomers to modern scientists. Recent discoveries reveal that the universe is expanding faster than expected due to dark energy, which constitutes about 68% of it. Space is a vacuum, making it silent, and a day on Venus lasts longer than its year. Neutron stars are incredibly dense, while the number of stars in the universe exceeds all grains of sand on Earth. Space exploration has revealed intriguing factors, like black holes slowing time and the Moon drifting away from Earth. The advent of space tourism presents exciting possibilities for future exploration.