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Points to Remember
* The field of study of the universe is called astronomy.
* The universe consists of galaxies, planets, stars, meteorites, satellites and all other forms of matter and energy.
* The half moon during the waxing period is called as first quarter and the half moon during the waning period is called as third quarter.
* The word crescent refers to the phases where the moon is less than half illuminated. The word gibbous refers to phases where the moon is more than half illuminated..
* The reversal of direction of planets is called as ‘retrograde motion’.
* The geocentric theory followed by the ancient people proposed that the Earth is at the centre and the sun and other planets revolve around it.
* The helio-centric theory states that the sun I at the centre and the planets revolve around it
* Galilio gave the observational evidence to support the heliocentric theory
* There are at least hundreds of billions of galaxies in the Universe.
* A galaxy is a large collection of stars or cluster of stars and celestial bodies held together by gravitational attraction.
* A constellation is a recognizable pattern of stars in the night sky when viewed from the Earth.
* An object that revolves around a planet in a stable and consistent orbit is called a satellite.
* The Indian Space Research Organization (ISRO) is the space agency of the Government of India headquartered in the city of Bangalore.
UNIVERSE AND SPACE
Let us know about Universe and space
Step 1: Use the URL or scan the QR code to open the activity page.
Step 2: Click the start button and then Click anywhere to open side bar.
Step 3: Click the top most icon in the side bar then Click the RUN INTRO button to see the various views of the solar system and universe
Step 4: Click the bottom most search icon in the side bar to search a particular planet, constellation, stars and Spacecraft.
Step 5: By dragging the mouse left ,right, up and down you can see the various views and scroll the Mouse to zoom in and zoom out .
Step 6: Click the play button to see the solar system in year wise.
Universe and Space URL:
*Pictures are indicative only
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