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Tanelorn
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What advances is theoretical or observational cosmology in the last decade have for you been the most impressive?
This is open to all, but especially to the pros!
This is open to all, but especially to the pros!
Some of the most significant advances in cosmology in the last decade include the discovery of gravitational waves, the confirmation of the existence of dark matter and dark energy, and the mapping of the cosmic microwave background radiation.
These advances have greatly expanded our understanding of the universe and its origins. They have provided evidence for the Big Bang theory and shed light on the structure and evolution of the universe.
Dark matter is a type of matter that does not emit or absorb light, making it invisible to traditional telescopes. However, its presence can be inferred through its gravitational effects on visible matter. It is important in cosmology because it makes up about 85% of the total matter in the universe and plays a crucial role in the formation and evolution of galaxies.
Dark energy is a mysterious force that is thought to be responsible for the accelerating expansion of the universe. Its exact nature is still unknown, but it is believed to make up about 70% of the total energy in the universe. Its presence is inferred through its repulsive effect on matter and radiation in the universe.
The discovery of gravitational waves has confirmed a major prediction of Einstein's theory of general relativity and opened up a new way of observing and understanding the universe. It has also allowed us to study extreme events such as black hole mergers, providing valuable insights into the nature of gravity and the structure of the universe.