Define all the terms.
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Answers
- Artificial Satellites : A man- made object space-craft placed in orbit around the Earth is called an artificial satellite.
- Asteroids : Asteroids are the small celestial objects which revolove around the sun between the orbits of Mars and Jupiter.
- Cassiopeia : Cassiopeia is a prominent constellation in the northern sky. It consists of 5 main stars.
- Celestial objects : The objects which revolove around the sun is called Celestial objects.
- Comets : Comets are very small celestial objects made of gas and dust which revolove around the sun in highly elliptical orbits and become visible only when they come close to the sun.
- Light Year : The distances between the various celestial objects are expressed in the unit of ' light year '.
- Meteroids : Meteoroids are celestial objects which range in size from tiny sand grains to big boulders of several hundred tonnes and revolve around the sun.
- Meteors : Meteors are the celestial bodies from the sky which we see as a bright streak of light that flashes are commonly called shooting starts .
- Natural Satellites : The natural occuring satellite which revolve around a planet is called Natural Satellites.
- Orion Constellation : Orion is also known as ' Hunter'. The Indian name of Orion is ' Mriga'. The Orion Constellation consists of 7 or 8 bright stars.
- Phases of the moon : The different shapes of the bright, visible part of the moon as seen from the Earth are called Phases of the moon.
- Constellation : A group of stars is called Constellations.
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1)An artificial satellite is an object that people have made and launched into orbit using rockets. There are currently over a thousand active satellites orbiting the Earth.
2)Asteroids are minor planets, especially of the inner Solar System. Larger asteroids have also been called planetoids.
3)Cassiopeia is a constellation in the northern sky, named after the vain queen Cassiopeia in Greek mythology, who boasted about her unrivaled beauty. Cassiopeia was one of the 48 constellations listed by the 2nd-century Greek astronomer Ptolemy, and it remains one of the 88 modern constellations today.
4)An astronomical object or celestial object is a naturally occurring physical entity, association, or structure that exists in the observable universe. In astronomy, the terms object and body are often used interchangeably.
5)A comet is an icy, small Solar System body that, when passing close to the Sun, warms and begins to release gases, a process called outgassing. This produces a visible atmosphere or coma, and sometimes also a tail.
6)A constellation is an area on the celestial sphere in which a group of stars forms an imaginary outline or pattern, typically representing an animal, mythological person or creature, or an inanimate object. The origins of the earliest constellations likely go back to prehistor.
7)the distance that light travels in one year, about 9.4607×1012 kilometres
8)A meteorite is a fragment of rock or iron from outer space, usually a meteoroid or asteroid, which survives passage through the atmosphere as a meteor to impact the surface of the Earth. Meteorites are believed to originate in the asteroid belt between the planets of Mars and Jupiter.
9)A meteor is a meteoroid – or a particle broken off an asteroid or comet orbiting the Sun – that burns up as it enters the Earth's atmosphere, creating the effect of a "shooting star". Meteoroids that reach the Earth's surface without disintegrating are called meteorites.
10)A natural satellite, or moon, is, in the most common usage, an astronomical body that orbits a planet or minor planet. In the Solar System there are six planetary satellite systems containing 205 known natural satellites.
11)Orbit is a word we hear quite often. ... An orbit is a regular, repeating path that one object in space takes around another one. An object in an orbit is called a satellite. A satellite can be natural, like the Earth or the Moon.
12)Orion is a prominent constellation located on the celestial equator and visible throughout the world. It is one of the most conspicuous and recognizable constellations in the night sky
13)The lunar phase or phase of the Moon is the shape of the directly sunlit portion of the Moon as viewed from Earth. The lunar phases gradually change over the period of a synodic month, as the orbital positions of the Moon around Earth and of Earth around the Sun shift.
14)An overview of the history, mythology and current scientific knowledge of the planets, moons and other objects in our solar system.
15)Polaris, designated α Ursae Minoris, commonly the North Star or Pole Star, is the brightest star in the constellation of Ursa Minor. It is very close to the north celestial pole, making it the current northern pole star.
16)the scanning of the earth by satellite or high-flying aircraft in order to obtain information about it.
17)The Solar System is the gravitationally bound system of the Sun and the objects that orbit it, either directly or indirectly. Of the objects that orbit the Sun directly, the largest are the eight planets, with the remainder being smaller objects, the dwarf planets and small Solar System bodies.
18)Stars are huge celestial bodies made mostly of hydrogen and helium that produce light and heat from the churning nuclear forges inside their cores. Aside from our sun, the dots of light we see in the sky are all light-years from Earth.
19)Ursa Major is a constellation in the northern sky, whose associated mythology likely dates back into prehistory. Its Latin name means "greater she-bear," referring to and contrasting it with nearby Ursa Minor, the lesser bear.