Aired (June 2, 2024): Ating AHA-lamin kung ang wishing star ay isang bituin na bumabagsak mula sa kalangitan! Bakit nga rin ba tila kumikinang ito habang bumabagsak?
Watch episodes of 'AHA!' every Sunday morning on GMA Network, hosted by Drew Arellano. #AHAGMA #AHAmazingLearning
Watch episodes of 'AHA!' every Sunday morning on GMA Network, hosted by Drew Arellano. #AHAGMA #AHAmazingLearning
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00:00 Have you ever thought that a wishing star is another star?
00:04 Don't worry, my friends.
00:08 Because we got you!
00:09 Because this morning, we will not only know the answer to our new questions,
00:14 we will also give you a list of coolest things about stars that you might not know about.
00:28 Stars are balls of gas that glow and look like they are looking up at the sky.
00:33 But...
00:35 The first thing on our list is related to a familiar nursery rhyme.
00:49 Did you know that stars don't really twinkle in the sky?
00:54 And the twinkling effect of a star is called stellar scintillation,
00:59 which is a result of the Earth's atmosphere.
01:01 It's like when you see a lamp from a distance,
01:04 even if it's a big light,
01:06 and when you pass through your finger like this,
01:10 you see that it's twinkling,
01:13 even if the lamp is not really twinkling.
01:16 It's the same with our atmosphere.
01:18 The dust in our atmosphere and the turbulence that swirls in our atmosphere,
01:26 what happens is that the stars twinkle when you're in outer space.
01:30 Yes, my friends, in case you don't know,
01:42 our sun is a star.
01:44 And it's counted in the classification of dwarf star.
01:48 Our classification system is made by scientists.
01:52 When they studied the stars in the early 20th century,
01:56 they found that some stars are too big compared to the sun.
02:00 So they called them giant stars.
02:03 And all the stars that are not giant are dwarfs.
02:07 Compared to giant or supergiant stars,
02:10 the sun is relatively small.
02:13 Other stars can be hundreds or thousands times bigger than this.
02:18 Did you know that all the stars that can be seen in the sky are bigger and brighter than the sun?
02:34 The primary reason for this is its distance.
02:38 93 million miles or 150 million kilometers away from Earth,
02:43 the sun is the closest star from us.
02:46 That's why it looks big to us.
02:48 The stars are really far.
02:50 They're so far that we don't use kilometers or miles to know their distance.
02:57 Sometimes we use the unit of light year.
03:01 Light year is the distance that the light travels in one year.
03:07 Sometimes the stars travel hundreds or thousands of light years away.
03:14 That's how far the stars are.
03:15 Most of the stars that we see in the sky are bright and big enough
03:21 to reach their starlight on Earth even if they're too far away.
03:35 Did you know that the color of stars in the sky is a clue of their temperature?
03:39 Stars have five colors.
03:41 Blue, white, yellow, orange, and red.
03:43 The coldest stars are reddish stars.
03:47 The hottest stars are bluish stars.
03:53 The blue star emits light with shorter wavelengths
03:57 while the red star emits light with longer wavelengths.
04:01 It's also measured with a symbol K, the standard international unit of thermodynamic temperature,
04:07 the temperature of stars.
04:09 We can't see millions of stars in the sky like what they say in movies or songs.
04:22 On a good night, a person with very good eyesight can see 2,000 to 2,500 stars at once.
04:30 Star Trivia #6 Wishing Stars Are Actually Not Stars
04:35 And now, the answer to our question earlier.
04:39 The wishing star or shooting star is not a star.
04:43 It's a meteor or small rocks or particles from space that enter the Earth's atmosphere.
04:49 When they fall on Earth, they scratch the Earth's atmosphere.
04:53 When you scratch your hand, it gets hot due to friction.
04:56 So, when they scratch the atmosphere, it gets very hot.
05:00 And when they get hot, they shine.
05:03 We can see that they glow for a short while.
05:07 And they say, "Hey, there's a shooting star."
05:09 But in reality, they're just rocks in the sky that fall.
05:13 Meteors can be seen anytime of the year.
05:17 But it's more often visible when there are meteor showers
05:20 that happen when Earth passes through the debris
05:23 that is left by comets and asteroids.
05:26 It's amazing to see stars in the sky.
05:30 And in our continued study of these,
05:32 we can discover more answers to our questions
05:36 on how the universe started.
05:38 Aha!
05:40 NASA Jet Propulsion Laboratory, California Institute of Technology
05:47 NASA Jet Propulsion Laboratory, California Institute of Technology
05:52 NASA Jet Propulsion Laboratory, California Institute of Technology
05:56 [BLANK_AUDIO]