Discover what exist in the universe
General Relativity and Space-Time Einstein's theory of general relativity reveals gravity as the curvature of space-time. Massive objects like galaxies warp space-time, creating gravity wells that guide the paths of light and celestial bodies. This four-dimensional continuum of space and time explains how gravity influences the movement of objects through […]
The Role of Dark Matter in Galaxy Formation Dark matter, invisible to typical observation, plays a crucial role in galaxy formation. It creates gravitational wells that draw in ordinary matter, shaping the structure of galaxies. The cold dark matter model explains how these gravitational ties built cosmic structures. As the […]
General Relativity and Space-Time According to Einstein's general relativity, massive objects like galaxies bend the fabric of space-time. This warping dictates the motion of celestial bodies, guiding them along curved paths. Our Milky Way galaxy, with its enormous mass, curves the space-time around it, influencing the orbits of stars like […]
In the vast expanse of the universe, gravity reveals itself not as a mere force but as an interaction between mass and the fabric of space-time. This concept reshapes our understanding of celestial phenomena, offering insights into the intricate dance of galaxies, stars, and light. General Relativity and Space-Time Curvature […]
Observable Universe and Its Scale The observable universe spans an awe-inspiring 93 billion light-years, equivalent to about 8.8 × 10^23 kilometers. Within this vast expanse lies approximately 3.1 × 10^54 kilograms of matter, with an average density of just a few atoms per cubic meter. Astronomers employ unique units to […]
Porphyrion: The Largest Black Hole Jet System The discovery of Porphyrion, a black hole's jet system stretching 23 million light-years, challenges our understanding of cosmic structures. Named after a giant from Greek legend, it spans a length equivalent to 140 Milky Ways lined up. Astronomers at Caltech and Leiden University, […]
Measurement of Distance Edwin Hubble's 1923 calculation of Andromeda's distance at 1 million light-years, later corrected to 2.5 million light-years, was a milestone in astronomy. This discovery proved that spiral nebulae were galaxies beyond the Milky Way, expanding our understanding of the universe. While parallax measurement is limited for cosmic […]
In the vast expanse of the universe, cosmic phenomena such as dark matter, dark energy, and the cosmic microwave background present intriguing puzzles. These elements, while elusive, shape our understanding of the cosmos. As we advance in technology and methodology, our grasp on these celestial mysteries continues to evolve, offering […]
Types of Galaxies Galaxies come in various shapes and sizes, moving through the cosmos with distinct characteristics. Spiral galaxies, like the Milky Way, feature bright, winding arms that host star formation, driven by dense gas clouds compressed by gravitational forces. They often have a central bulge packed with older stars. […]
Fundamentals of Redshift The concept of redshift is analogous to the Doppler effect observed with sound waves. When light travels towards an observer, the waves compress, shifting the color towards the blue end of the spectrum (blueshift). Conversely, when light sources move away, the waves stretch, shifting towards the red […]
