cosmic information

Have you ever gazed at the night sky, wondering about the unseen forces that shape the universe? Scientists, armed with an arsenal of sophisticated observations and theoretical models, have delved into the mysterious realm of dark matter, a cosmic enigma constituting approximately 27% of the universe. ### Decoding the Composition The cosmic recipe reads: ~68% dark energy, ~27% dark matter, and a mere ~5% normal matter. But what exactly is dark matter? ### Dark, Elusive, and Not Conventional Dark matter is aptly named – it eludes our direct perception as it does not manifest in the form of stars or planets that grace our night skies. Observations vividly reveal that the visible matter we observe falls significantly short of constituting the observed 27%. ### Not Your Ordinary Matter It's not shrouded in dark clouds of conventional matter, composed of baryons – particles that constitute protons and neutrons. If it were, we'd detect these clouds through their absorption of passing...

In the vast tapestry of the cosmos, galaxies stand as cosmic islands, each with its unique characteristics and stories. Let's embark on an extended journey through the captivating diversity of galaxies that grace the celestial canvas. **1. Spiral Galaxies: Whirlpools of Stars** Spiral galaxies, such as our own Milky Way, are celestial marvels that showcase a stunning blend of structure and symmetry. The spiral arms, adorned with bright clusters of stars and nebulae, create a mesmerizing celestial dance. Beyond their picturesque appearance, these galaxies are dynamic environments, acting as stellar nurseries where new stars are born. In the grand ballet of the universe, the gravitational forces at play within spiral galaxies shape their distinctive features. The rotation of stars around the galactic center and the interstellar medium's influence contribute to the intricate patterns we observe. From grand design spirals to flocculent spirals, each subtype ...