Heliosphere
The heliosphere is a vast region of space dominated by the Sun’s magnetic field and the solar wind. It extends…
Category: Solar Activity
Solar Wind A Constant Stream of Particles
The solar wind is a continuous stream of charged particles, primarily protons and electrons, emitted from the Sun. It travels…
Solar Cycle The Sun’s Rhythmic Pattern
The solar cycle is the approximately 11-year periodic change in the Sun’s activity. During this cycle, the number of sunspots…
The Sun Our Life-Giving Star
The Sun is a massive, luminous sphere of plasma primarily composed of hydrogen and helium. It is the central star…
Exoplanets Worlds Beyond Our Solar System
Exoplanets are planets that orbit stars other than our Sun. The discovery of exoplanets has revolutionized our understanding of the…
Cosmology The Science of the Universe
Cosmology is the study of the origin, evolution, and fate of the universe. It is a broad field that encompasses…
Big Bang
The Big Bang is the prevailing cosmological model that describes the origin and evolution of the universe. According to this…
Light-Year A Cosmic Unit of Distance
A light-year is a unit of length used to measure astronomical distances. It is defined as the distance that light…
Orbits The Paths of Celestial Bodies
An orbit is the path that one celestial body takes around another. In our solar system, planets orbit the Sun,…
Gravity The Force That Holds Us Down
Gravity is a fundamental force of nature that attracts objects towards each other. It is responsible for the Earth’s orbit…
Astronauts Pioneers of Space
Astronauts are individuals who have trained and qualified to travel into space. They are explorers who have pushed the boundaries…
Spacecraft Our Vehicles to the Cosmos
Spacecraft are vehicles designed to operate in space. They come in a variety of shapes, sizes, and capabilities, and have…