Question | Answer |
Term: Star | Definition: Celestial space that has great size and emit light as a source of light. Example: The Sun, it is the closest star to Earth. |
Term: Planet | Definition: Celestial bodies that surround the star as the centre of the solar system. The planet can not produce its own light but can reflect light. |
Term: Satellite | Definition: Objects that orbit around the planet that has its own circulation. Example: The Moon is the Earth's natural satellite. |
Term: Comet | Definition: Celestial bodies that orbit the sun. Comets have orbits own orbit whose shape is oval. Commonly referred to as a comet comet because of its bright glowing gas and dust tail is very long. |
Term: Moon | Definition: The natural satellite of the earth, visible (chiefly at night) by reflected light from the sun. |
Term: Galaxy | Definition: A system of millions or billions of stars, together with gas and dust, held together by gravitational attraction. |
Term: Quasar | Definition: A massive and extremely remote celestial object, emitting exceptionally large amounts of energy, which typically has a starlike image in a telescope. It has been suggested that quasars contain massive black holes and may represent a stage in the evolution of some galaxies. |
Term: Pulsar | Definition: A neutron star that emits rapid and periodic pulses of radiation. A neutron star is an extremely compact or dense ball of neutrons created from the central core of a star that collapsed under gravity during a supernova explosion. |
Term: Black hole | Definition: It is extremely luminous and cause a burst of radiation that often briefly outshines an entire galaxy, before fading from view over several weeks or months. During this interval a supernova can radiate as much energy as the Sun is expected to emit over its entire life span. |
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