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The Milky Way is our galaxy, a massive collection of stars, planets, gas, and dust held together by gravity. It contains billions of stars, including our Sun. It appears as a glowing band across the night sky. The Mil...
A star is born from a cloud of gas and dust (nebula). Gravity pulls the gases together, forming a protostar. When temperature becomes high, nuclear fusion begins, and the star shines. After millions to billions of yea...
Constellations are groups of stars that appear to form recognizable patterns in the night sky. They help in navigation and timekeeping. Examples include Orion (the Hunter), Ursa Major (the Big Dipper), and Cassiopeia...
A star is a huge ball of hot gases, mainly hydrogen and helium, undergoing nuclear fusion and producing its own light and heat. Planets, however, do not produce light; they only reflect light from stars. For example,...
The Sun provides light and heat essential for life. Plants use sunlight in photosynthesis, forming the base of the food chain. Solar energy drives weather, winds, rainfall, and ocean currents. Fossil fuels are also an...
Earth’s atmosphere acts as a shield. The ozone layer absorbs harmful ultraviolet (UV) radiation from the Sun. The magnetosphere deflects solar wind and charged particles. Without this protection, life on Earth would b...
Solar Eclipse: Occurs when the Moon comes between Earth and the Sun, blocking sunlight partially or completely. Lunar Eclipse: Occurs when Earth comes between the Sun and Moon, and Eart...
The phases of the Moon occur due to its revolution around Earth. As sunlight falls on different parts of the Moon, we see varying shapes: New Moon (completely dark), Crescent, First Quarter, Gib...
The Moon takes exactly the same time to rotate on its axis as it takes to revolve around the Earth—about 27 days. This phenomenon is called synchronous rotation. As a result, only one hemisphere of the Moon is visible...
Planets are celestial bodies that revolve around the Sun, have their own gravity, and have cleared their orbit of other objects. Dwarf planets, like Pluto, also orbit the Sun but are smaller and cannot clear their orb...
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