The current understanding of the composition of the universe suggests that dark matter and dark energy together make up the majority of the universe, while ordinary matter, such as planets, stars, and gas clouds, constitutes a relatively small percentage.
Dark matter is believed to account for about 26.8% of the total mass-energy content of the universe, based on the most recent measurements and observations. It does not emit, absorb, or interact with electromagnetic radiation, making it difficult to directly detect. However, its presence is inferred through its gravitational effects on visible matter and the large-scale structure of the universe.
Dark energy, on the other hand, is a hypothetical form of energy that is thought to permeate all of space and contribute to the accelerated expansion of the universe. It is estimated to make up approximately 68.3% of the total mass-energy content of the universe.
Ordinary matter, which includes atoms, molecules, planets, stars, and galaxies, comprises only a small fraction of the universe's composition. It is estimated to account for roughly 4.9% of the total mass-energy content of the universe.
It's important to note that these percentages are based on the current understanding of cosmology, and further research and observations may refine our understanding of these values in the future.