Discover what exist in the universe
Detection of Dimethyl Sulfide (DMS) The discovery of dimethyl sulfide (DMS) in K2-18b's atmosphere has intrigued astronomers. This molecule, often produced by Earth's marine life, appears as a potential indicator of life on another planet. However, experts remain cautious about directly linking it to extraterrestrial microorganisms. Recent data from the […]
Cosmic inflation offers insights into the universe's early moments, addressing puzzles left by the Big Bang theory. Through theoretical constructs and observational evidence, we gain a deeper understanding of how our universe came to be. The Basics of Cosmic Inflation Cosmic inflation theory posits that shortly after the Big Bang, […]
In space, objects like 'Oumuamua challenge our understanding of the universe. These interstellar visitors, with their unusual paths and characteristics, offer valuable insights into the dynamics of planetary systems beyond our own. Discovery and Characteristics of 'Oumuamua In October 2017, 'Oumuamua entered our solar system unexpectedly, catching astronomers' attention using […]
Black Hole Theory and Hawking Radiation Stephen Hawking's insights into black holes revolutionized our understanding of these cosmic phenomena. His theory of Hawking radiation proposed that black holes emit tiny particles over time, gradually losing mass. This challenged the notion that black holes were eternal prisons for matter. Hawking further […]
Origin and Nature of the CMB The cosmic microwave background (CMB) emerged about 380,000 years after the Big Bang, when the universe cooled enough for protons and electrons to form neutral hydrogen atoms. This transition allowed light to travel freely across space without constant interference from charged particles. Today, this […]
Introduction to K2-18b K2-18b, located 124 light-years from Earth in the constellation Leo, intrigues researchers worldwide. Orbiting its red dwarf star, K2-18, this exoplanet absorbs around 1.22 kilowatts of solar power per square meter—comparable to Earth's 1.36 kW. These familiar details spark scientists' interest. Classified as a Hycean exoplanet, K2-18b […]
Foundations of the Cosmic Distance Ladder Measuring cosmic distances is challenging. To determine how far away stars, galaxies, and other celestial bodies are, astronomers use the cosmic distance ladder. Each step, or "rung," involves different techniques that build upon one another, allowing scientists to reach greater distances with each successive […]
Current Estimates and Methods The age of the universe is a fundamental question in cosmology, with current estimates centering around 13.82 billion years, based on data from the European Space Agency's Planck mission. However, discrepancies in measurements of the Hubble constant—which quantifies the universe's expansion rate—have led to a paradox […]
Normal Matter vs. Dark Matter Normal matter, comprising less than 5% of the universe, is made of protons, neutrons, and electrons. It's visible, tangible, and forms everything from planets to living beings. Dark matter, accounting for about 27% of the universe, doesn't interact with light and is only detectable through […]
Nature of Sound Waves Sound waves are mechanical waves that require a medium to propagate. They transfer energy through the physical interaction of molecules, similar to the movement of a Slinky toy. When these pressure waves reach our eardrums, they cause vibrations that our brains interpret as sound. In space, […]
