Photo Credit NASA Introduction: The Universe is Full of Stars and Galaxies When you look up at the night sky, you see thousands of tiny lights. These are...
Stars and Galaxies
Stars and galaxies are the building blocks of the universe. A star is a massive, glowing sphere of gas, mostly made of hydrogen and helium, that produces energy through nuclear fusion. Stars come in different sizes, colors, and life cycles, from small red dwarfs to gigantic supernovae and black holes.
A galaxy is a vast collection of stars, gas, dust, and dark matter, bound together by gravity. Our home galaxy, the Milky Way, contains over 100 billion stars, including our Sun. The universe holds trillions of galaxies, each with unique shapes and properties.
ISRO, NASA, and other space agencies study stars and galaxies using powerful telescopes like Hubble, James Webb, and ISRO’s AstroSat, helping us uncover the mysteries of cosmic evolution and the fate of the universe
Introduction: What Are Stars? Stars are the fundamental building blocks of the universe. They provide light, heat, and energy, shaping the evolution of...
Photo by NASA Introduction: The Sun – Our Cosmic Powerhouse The Sun is the center of our Solar System, providing light, heat, and energy that sustains life on...
Introduction: What Are Constellations? When you look up at the night sky, you might see patterns of stars forming shapes like a hunter, a lion, or a bear...
Introduction: What Are Galaxies? A galaxy is a vast collection of stars, gas, dust, dark matter, and planets, all held together by gravity. The universe...
