Gravity and Relativity Gravity is the pulling force that all matter and objects have - from a grain of sand to a supergiant star. Without gr...
Showing posts with label Physical Sciences. Show all posts
Showing posts with label Physical Sciences. Show all posts
Space Exploration
Space Exploration In 1957, the first spacecraft, Russia's Sputnik 1, orbited the Earth. This began the 'Space Age'. Since then, ...
Moons, Asteroids and Comets
Moons, Asteroids and Comets Moons are large, round, rocky objects that travel around planets. Asteroids are smaller, lumpy rocks that orbit ...
Gas Giants
Gas Giants The gas giants are the four planets in the Solar System furthest from the Sun. They are mainly massive balls of swirling gases, a...
Rocky Planets
Rocky Planets The four planets nearest to the Sun are Mercury, Venus, Earth and Mars. They are made mainly of solid matter, especially rocks...
The Sun and the Solar System
The Sun and the Solar System Our nearest star is not one of the tiny points of light twinkling in the night sky. It is an enormous ball of f...
Galaxies and Stars
Galaxies and Stars The Universe contains hundreds of billions of galaxies, each one a massive group of stars. A star is a huge spinning ball...
The Universe
The Universe The Universe consists of everything that exists, everywhere. It includes objects such as stars, planets, moon, vast dust clouds...
Energy and Forces
Energy and Forces Energy is the ability to cause changes and make things happen. It comes in many forms, including movement, heat. light, so...