Discover what exist in the universe
Detection of DMS on K2-18b NASA's James Webb Space Telescope has potentially detected dimethyl sulfide (DMS) in the atmosphere of K2-18b. This molecule, often produced by marine algae on Earth, hints at possible life beyond our solar system. However, the scientific community remains cautious. Detecting molecules in space relies on […]
Origins of the Universe The universe began about 13.7 billion years ago, compressed into an incredibly tiny point. Cosmic inflation, occurring in less than 10-32 of a second, rapidly expanded the universe faster than light speed. After this initial expansion, the universe settled to form particles that would eventually become […]
The story of the Hubble Constant reflects humanity's pursuit of understanding the universe's expansion, marked by significant milestones and ongoing debates. Historical Development of the Hubble Constant Edwin Hubble's observation that galaxies are moving away from us revolutionized our cosmic perspective. Before Hubble, Vesto Slipher noted that spiral nebulae were […]
Exciting Discovery on K2-18b: Potential Signs of Life? The astronomical community is buzzing with excitement over recent observations of exoplanet K2-18b. Located approximately 120 light-years away in the Leo constellation, this intriguing world has captured attention due to findings from the James Webb Space Telescope (JWST). Scientists have detected potential […]
Atmospheric Composition of K2-18b The atmosphere of K2-18b presents an intriguing puzzle. Methane and carbon dioxide have been detected, suggesting a hydrogen-rich atmosphere possibly enveloping an ocean. Hints of dimethyl sulfide, a molecule often associated with marine life on Earth, have raised interesting questions about potential biosignatures. K2-18b orbits a […]
Definition and Calculation of a Light-Year A light-year measures the distance light travels in one year, approximately 9.46 trillion kilometers. Light moves at 299,792 kilometers per second, covering this vast distance in about 31.54 million seconds (one year). Light-years are used instead of kilometers or miles due to the immense […]
Detection of Dimethyl Sulfide (DMS) The James Webb Space Telescope (JWST) has revealed intriguing observations suggesting the presence of dimethyl sulfide (DMS) in the atmosphere of exoplanet K2-18b. Using the telescope's Mid-Infrared Instrument (MIRI), scientists have detected this molecule, often linked with biological activity on Earth, presenting an exciting yet […]
The Nature of Dark Energy Dark energy, the enigmatic force driving the universe's accelerated expansion, remains one of the greatest mysteries in cosmology. Accounting for approximately 70% of the universe's content, it eludes direct observation and is inferred solely from the universe's behavior. The Lambda Cold Dark Matter (LCDM) model, […]
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, […]
