today in science i learned about light and the earths size compared with the sun . first i will talk about light.
light:
light can be two things :the first thing it can be is a wave and the second thing it can be is a particle . I'll tell you about waves first .when light is like a wave it sort of acts like a sound wave but not really . it is way faster than sound waves (the speed of light is 186,282 miles per second!)and it doesn't need a medium (something to go through like air or wood or glass ) light can travel through a vacuum (nothing, like space. i will get back to space later;) . when light is like a particle it is like a train of particles moving as fast as light () called Photons . there are many types of light . there is visible light which is the light we see . red , orange , yellow , green , blue , violet and indigo . different colors bounce or get absorbed by different objects. and that how we see . there are also ultraviolet , infrared , radio, microwave and X-ray lights all of these are not visible or invisible.
the suns and the earths size:
i am am now going to talk about the suns and the earths size . for me my town is huge. it about 26 square miles! and now thinking about the earth how huge that is ! its humungous !its surface area is 196.9 million sq miles! i can barely comprehend it! the earth is humungous but now let think about the sun . 1,000,000 Earths would fit inside the sun! (and all this time i thought the earth was huge (joke!))250 million Plutos would fit inside the Sun! the suns surface area is 2.3 trillion square miles! the sun is Gargantuan ! it weighs 4.4000 , 000 , 000 , 000 , 000 , 000 , 000 , 000 , 000 ,000 pounds! its practicality impossible to comprehend ! the earth is 92,960,000 miles away from the sun! this is called an astronomical unit or AU for short. it take light eight minutes to travel from the sun to the earth ! it good that we are so far away so that we don't get burned up by the sun! about 512,000,000(512 million) suns can fit into Antares the red giant star ! Antares is big its large its huge its humungous its Massive its Gargantuan!s impossibly large for me to comprehend ! and i thought my state was huge:) 4.5 billion suns can fit into NML cygni one of the largest stars known so far. now NML cygni is Galactic! (very very very very very very Gargantuan!) an i thought my town was huge! :)
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