“This is the video, I'm playing tomorrow can you create me some video questions for it ? [Music] 0:10 Hey, where do the lights go? Is it night 0:14 already? 0:16 No, Dr. Box. Something just hit the sun. 0:20 It's scaring me. 0:23 Oh, don't worry, buddy. This is nothing 0:26 but the 0:28 eclipse. Here, take these 0:33 glasses. Hello, friends. Thanks for 0:36 passing by. As you can see, the sun's 0:40 got hidden and it's really dark out 0:42 here. Do you know what it is? Don't 0:46 worry, it is nothing but the solar 0:49 eclipse. 0:51 Come let me tell you something about the 0:54 solar eclipse today. Zoom in. A solar 0:58 eclipse occurs when the moon comes in 1:00 between the earth and the sun causing a 1:03 shadow of the moon to fall on certain 1:06 portions of the earth. From these 1:08 locations, it appears as if the sun has 1:11 gone 1:13 dark. Since the moon is very small in 1:16 front of the sun, it only blocks a part 1:18 of it. 1:20 Hence, a solar eclipse cannot be seen 1:23 from every part of the earth, but only 1:26 from the locations where the shadow of 1:28 the moon 1:29 [Music] 1:31 falls. So, buddy, no reason to get 1:34 scared now, is it? 1:37 No, Dr. Box, not at all. 1:41 The three major parts during a solar 1:44 eclipse are 1:46 umbra and umbra and 1:50 penumbra. The umbra is the portion of 1:53 the moon's shadow where the moon 1:55 completely covers the sun. This is when 1:58 the total solar eclipse occurs where you 2:02 cannot see the sun at 2:04 all. Ant umbra is the area beyond the 2:08 umbra. Here the moon is completely in 2:11 front of the sun but doesn't cover the 2:15 entire sun. The outline of the sun can 2:18 be seen around the shadow of the moon 2:22 and that is when you see the annular 2:25 solar 2:26 eclipse. Penumbra is the area of the 2:29 shadow where only a portion of the moon 2:32 is in front of the sun. This is when the 2:36 partial solar eclipse occurs, which lets 2:39 you see only a part of the sun. You 2:43 could see how the solar eclipse works in 2:45 your 2:47 homes. Take these two balls. The bigger 2:50 blue ball is the Earth and the smaller 2:54 white ball will represent the moon. 2:57 Place them like this and light up the 3:01 torch. The torch will be our sun. 3:06 There, there, you just got a homemade 3:09 solar eclipse. Amazing, isn't it? Trivia 3:14 time. One should never watch the solar 3:17 eclipse with bare eyes because of the 3:20 harmful UV rays. The longest a total 3:23 solar eclipse can last is 7 and 1/2 3:26 minutes. 3:28 So now if day suddenly turns into night, 3:31 you would know it is the solar eclipse. 3:34 This is me zooming out. Tune in next 3:38 time for more fun 3:46 facts. Hey, care to look at what I'm 3:50 reading? I am reading about the lunar 3:53 eclipse. Let's see what it is. Zoom in. 3:58 A lunar eclipse happens when the Earth 4:01 moves between the sun and the moon, 4:04 blocking the sun's light from reaching 4:06 the moon. Come, let's go to space and 4:10 see how the lunar eclipse 4:14 occurs. You see them? The sun, the 4:18 earth, and the moon. Look how the moon 4:21 is slowly passing from the penumbra to 4:24 the umbra. Hey, stop. 4:29 Stop. This is the penumbra, the region 4:32 beyond the 4:34 umbra. Okay, 4:36 moon. When the moon travels to the 4:39 penumbra, we see a penumbra lunar 4:41 eclipse where the moon is faintly 4:44 visible to us. When the part of the moon 4:47 is in the penumbra and a part of it is 4:50 in the umbra, we see a partial lunar 4:53 eclipse. And when the moon travels to 4:56 the umbra, we see a total lunar 5:01 eclipse. There are times when the moon 5:03 appears to be red. Oh, don't be scared. 5:07 I'll tell you how that 5:09 happens. As we all know, the rays of the 5:13 sun are made up of red, orange, yellow, 5:18 green, blue, indigo, and violet. 5:23 When the sun rays hit the atmosphere of 5:26 the earth, most of the colors get 5:28 scattered away and the color red 5:32 remains due to which we see a red or a 5:36 blood moon during a total lunar eclipse. 5:40 Trivia 5:42 time. The word eclipse in Greek means 5:45 downfall. 5:47 A solar eclipse always takes place about 5:50 2 weeks before or after a lunar 5:54 [Music] 5:55 eclipse. So now you know quite a lot 5:58 about the lunar eclipse, don't you? This 6:01 is me zooming out. Tune in next time for 6:04 more fun 6:08 facts. Ah, look at this kitty. Twinkle, 6:13 twinkle, little 6:15 star. Moon, where you are? 6:20 Moon is right here, little kitty. It's 6:24 just that we can't see it. It's me, John 6:29 Cena. 6:32 Hey, friends. I know. Just like little 6:35 kitty, you must be curious to solve the 6:38 mystery behind our moon's superpowers. 6:41 So in today's episode, let me take you 6:45 through the different phases of the moon 6:47 and shed some light on the reasons 6:50 behind it. Zoom 6:53 in. Hey friends, every time you look up 6:56 in the sky at night, you see the silver 6:59 moon shining bright, illuminating the 7:02 earth from its light. Not only that, but 7:06 the moon also seems to have magical 7:09 powers to change its shape and can 7:12 willingly appear and 7:15 disappear. But the matter of fact is 7:18 like any magic trick, this is an 7:22 illusion as well. Yes, my dear friends, 7:26 you will be surprised to know that the 7:28 moon doesn't emit light itself. And the 7:32 moonlight we see is actually the sun's 7:36 light reflected off the lunar 7:40 surface. Yes, this sunlight is also 7:44 responsible for the moon's 7:46 transformation from the new moon to the 7:49 full moon and back again under the 7:52 process we call the lunar cycle or the 7:56 phases of the moon. But the vital 8:00 question is how does it happen? So let 8:04 us have a good look at 8:07 it. You see as we know the moon revolves 8:11 around the earth at a fixed orbit and 8:15 does not have its own light. So when the 8:18 moon is exactly in the middle of the 8:21 earth and the sun, it becomes nearly 8:24 invisible in the night sky as the side 8:27 facing the earth does not get the 8:31 sunlight. This invisible phase of the 8:34 moon is called the new moon. 8:38 But as the moon continues to orbit and 8:41 moves a little ahead in the waxing 8:44 phase, after 2 or 3 days, some light 8:48 from the sun starts to fall on some of 8:51 its spot, which makes the moon appear in 8:54 a crescent shape in the phase called the 8:58 waxing crescent. 9:01 And as the moon continues its orbital 9:04 journey, the sun's reflection keeps on 9:07 increasing on the moon's 9:09 surface. And in about a week, when the 9:12 sun is in a 90° position to the moon, we 9:16 could see its halflit portion. This 9:20 phase is called the first quarter. 9:24 Next, in about 2 or 3 days after the 9:27 first quarter, the moon is more than 9:30 half full and still increasing its 9:33 illuminated surface in the phase we 9:36 called waxing 9:39 gibbus. And in about 2 weeks after the 9:42 new moon or the invisible moon it 9:46 reaches behind earth with respect to the 9:49 sun and the full side of the moon facing 9:52 the earth gets the sunlight due to which 9:56 finally we can see the full 10:02 moon. But it doesn't end there my 10:05 friends as now comes the waning stage 10:09 where the moon starts its return journey 10:12 from full moon to the invisible new moon 10:16 as the light begins to decrease on its 10:19 surface and it enters the waning gibbus 10:23 phase. After this occurs, the last 10:26 quarter phase during which the moon is 10:29 once again half illuminated, but the lit 10:33 area that's visible is on the decline. 10:37 This is followed by the waning crescent 10:40 phase in which the moon shrinks back to 10:43 a crescent that's less than half full. 10:47 And finally, the moon finishes its 10:50 journey in about 10:52 29.5 days. and comes back between the 10:55 Earth and Sun to its new moon phase, 10:59 marking the completion of the lunar 11:02 cycle, just to start over 11:06 again. Trivia 11:08 time. Did you know when the moon appears 11:11 to be getting bigger, it's called 11:13 waxing? And when it looks like it's 11:16 getting smaller, it's called waning. 11:21 Also, the word gibbus comes from the 11:23 Latin for hump and has been used for 11:27 centuries to describe rounded or convex 11:30 shapes like swollen eyes or the back of 11:34 a 11:35 camel. Hope you learned something new in 11:38 today's episode. Until next time, it's 11:42 me, Dr. Box, zooming out. 11:46 [Music] 11:49 John Cena. 11:52 [Music] 11:56 Ah, never 12:00 mind. I am going to destroy the 12:04 [Music] 12:06 moon. Do it. 12:10 Well, it's okay for the sake of this 12:13 fictional movie, little kitty. But in 12:16 reality, life on Earth without the moon 12:19 will go for a toss. Why? Hey friends, 12:24 I'm sure just like Kitty, you two must 12:27 be wondering about the importance of the 12:30 moon. So, in today's episode, let us 12:33 step out on the lunar surface and answer 12:37 a fascinating question. What if the moon 12:42 disappeared? Zoom in. 12:45 The moon, the shiny silvery natural 12:48 satellite of the earth, is the closest 12:51 object to our planet. And its location 12:54 is not merely a chance, but it plays a 12:58 massive role in the existence of the 13:01 earth. Yes, as we know, the most basic 13:05 thing the moon does for us is that it 13:08 provides some light in the night. So in 13:12 case if it suddenly disappears, the 13:15 first thing we will notice is that the 13:17 night will get even 13:20 darker. Although it will be an excellent 13:23 sight to gaze at stars. However, for 13:26 most of us, especially many animals, a 13:30 missing moon could cause a lot of 13:33 confusion. 13:35 Yes, that's because nocturnal animals 13:39 like owls rely on both the darkness of 13:42 night and a small amount of moonlight to 13:46 hunt 13:47 effectively. Without any light at night, 13:50 prey would likely thrive because 13:53 predators would have a more challenging 13:55 time gating them. In the long run, this 13:59 chaos would cause an ecological 14:02 imbalance leading to the extinction of 14:05 many predatory 14:09 animals. Next, as we know that the 14:12 moon's gravitational force is 14:14 responsible for causing tides in the 14:16 oceans. So people living near the oceans 14:20 would find the waves reduced because of 14:24 which we won't be able to do water 14:27 surfing 14:28 anymore. But worse, many marine animals 14:32 who depend on oceanic currents for 14:35 survival will be wiped out. And the next 14:39 thing to go for a toss will be our 14:42 24-hour dayight cycle. 14:46 Yes, the moon's gravitational pull is 14:49 solely responsible for keeping the earth 14:52 rotate round its axis for 24 hours at a 14:56 suitable speed. So without the moon, the 15:00 earth will start spinning three to four 15:03 times faster than it is now due to which 15:07 a day on earth will reduce to around 6 15:10 to 8 hours long. 15:13 Not only that, while rotating at such a 15:16 high speed, we would experience winds up 15:20 to 480 km per hour. Due to this, 15:25 anything that is not attached to the 15:27 bedrock will eventually fly away, 15:31 especially the birds and animals. 15:35 And if a shorter day and a faster 15:37 atmosphere weren't enough for you to 15:40 understand the importance of our moon, 15:42 then how about a messed up season 15:46 cycle? Yes, we experience seasons 15:50 because of Earth's 15:52 23.5° tilted position held up by the 15:56 moon. So without the moon stabilizing 16:00 our tilt, it is possible that the 16:02 earth's tilt could vary 16:05 drastically eventually affecting the 16:08 season and climate cycle which will turn 16:13 extreme. And lastly, it is said that the 16:16 craters on the moon are the result of it 16:19 shielding us from many incoming 16:22 asteroids and comets. So, if the moon 16:25 goes missing, many asteroids will shoot 16:29 directly on the Earth's surface, which 16:32 can wipe out an entire species as we 16:36 have seen in the past. So, my dear 16:39 friends, next time you see the moon 16:42 illuminating our dark sky, make sure to 16:45 thank it for everything it does for 16:49 us. Trivia time. 16:53 Did you know the moon was made when a 16:55 rock smashed into 16:58 Earth? Also, you won't believe it, but 17:01 the moon's surface is actually dark. 17:05 Yes, the moonlight we see is actually 17:08 the sun's light reflected off the lunar 17:12 surface. Hope you learned something new 17:15 in today's episode. Until next time, 17:18 it's me, Dr. Box zooming 17:26 out. Ah, never mind.”