Discover what exist in the universe
Probability of Collision Recent studies suggest a 50-50 chance of the Milky Way and Andromeda galaxies merging. This uncertainty stems from the complex gravitational interactions within the Local Group of galaxies. The Triangulum Galaxy (M33) and the Large Magellanic Cloud (LMC) play significant roles in this cosmic dance, potentially influencing […]
Historical Understanding of the Universe A century ago, astronomers grappled with the cosmic arrangement, debating whether the universe consisted solely of the Milky Way or included multiple "island universes." The nebulae, mysterious light clusters, posed a particular challenge in distance measurement. By the 1920s, new methods and powerful telescopes began […]
Circumgalactic Medium (CGM) and Its Extent The Andromeda Galaxy's circumgalactic medium (CGM) is a massive halo of gas extending 1.3 to 2 million light-years from the galaxy's center. This vast structure intertwines with Andromeda and potentially mingles with the Milky Way's CGM. The CGM is crucial for understanding galactic evolution, […]
The cosmos offers a story stretching from the Big Bang to the enigmatic forces shaping its future. This journey reveals the fundamental processes that have crafted the universe as we perceive it today, from the formation of stars and galaxies to the roles of dark matter and dark energy. The […]
Galaxy Size Distribution The Sloan Digital Sky Survey (SDSS) has revealed approximately 140,000 galaxies in various shapes and sizes. Late-type galaxies, such as spirals, have a characteristic brightness of M_r,0 ≈ -20.5, corresponding to a stellar mass of about 1010.6 solar masses. Less massive galaxies exhibit greater brightness variability (about […]
The Nature of Dark Matter Dark matter, an invisible component of our universe, exerts a profound gravitational influence despite its imperceptibility. It doesn't interact with light or energy, making it undetectable by conventional astronomical tools. However, its gravitational effects are undeniable. Scientists have proposed several explanations for dark matter's nature: […]
Galactic Structure and Star Distribution The Milky Way, our home galaxy, extends approximately 100,000 light-years in diameter and features a complex structure comprised of a central bulge, four major arms, and supplementary minor arms such as the Orion-Cygnus Arm, which harbors our sun. The galaxy's bulge, approximately 10,000 light-years across, […]
From the beginning of time, the human imagination has been enthralled with the universe because of its unfathomable size and limitless secrets. It is a breathtaking chasm that extends much beyond our wildest dreams and contains all that is observable and understandable. The universe is full with mysteries that are […]
Supernovas are amazing natural phenomena that captivate our attention. They are catastrophic, brilliant explosions of stars that outshine the brightness of their host galaxy. These fireworks from space can last for weeks or even months, making a lasting impression on the cosmos. Supernovae are among the most remarkable phenomena in […]
People have been staring up at the boundless sky with wonder and amazement at the heavenly bodies that grace our view ever since the start of civilization. Of all these heavenly treasures, none are more notable than our sun, whose radiance fills the globe with warmth and light, and the […]
