This is my power point presentation about the sky.

1. 7Interesting
FactsAboutthe
Sky
RAINE ZYIENTH E. DELA CRUZ
8- RED LAUAN

2. CloudsAreHeavy
•Large, fluffy clouds are frequently seen in the
sky, and because they are drifting around,
they appear light. The opposite is true, as you
can see.
•The average cumulus cloud weights 1.1 million
pounds, according to the United States
Geological Survey! Although they may not be
dense, clouds can support a lot of weight.

3. WhenYouLookatStars,You’reLookingatthePast
•Light travels at the same pace as everything else. The light of
an object travels more slowly the further out in space it is.
•If you can see the Andromeda galaxy, you can see that it
took 2.5 million years for light from that galaxy to reach
here. Light from Sirius takes 8.6 years to reach us. In other
words, you are viewing the galaxy as it was 2.5 million years
ago when you look at it.
•If they are looking at the Milky much, if there is life on a
planet in that far-off galaxy, they will witness how things
were 2.5 million years ago, much before Homo sapiens even
started to evolve!

4. SomeVisibleStarsAre19QuadrillionMilesAway
•Between 2,600 and 3,000 light-years, or around 19
quadrillion miles, separate us from the star Deneb.
Deneb frequently ranks among the brightest stars in
the sky with a brightness of 1.25.
•Even though that is a significant distance, it is still
relatively close by astronomical standards. 52,850
light-years across, the Milky Way is still within 19
quadrillion miles of us!

5. StarsDon’tTwinkle
•You might notice a star flashing in and out of existence in
the night sky. When you stare at the stars, you may
notice what is known as a twinkle. Stars don't actually
sparkle, despite what you're witnessing.
•It has to do with how the atmosphere of Earth affects
what you can see and how visible light travels through it.
You won't notice any twinkling if you ever get to travel to
space and observe the stars!

6. YouCanOnlySeeHalftheNightSkyatOnce
•There are a tonne of stars visible when you look up at
the night sky, but what's astonishing is that you can
only see roughly half of it at once.
•There is a lot of arithmetic involved in establishing this,
but it all makes sense if you imagine that you are
standing on a spherical. Even when we are facing that
direction, the Sun is so bright that it obscures anything
else that we could see, making it impossible to see
through the Earth to what is on the other side.

7. ThereAreAround2TrillionGalaxiesintheUniverse
•The size of the universe is enormous. In fact, a recent
study suggests that the observable universe contains
about 2 trillion galaxies.
•The present number is likely lower even though the
galaxies themselves are larger since many scientists
believe that many of these galaxies have merged into
other galaxies over time. However, even though the
universe is full of galaxies, you can rarely see any of
them from your backyard.

8. ThereAre100BillionStarsintheMilkyWay
•In the observable universe, there are a tonne of
galaxies, and if the Milky Way is any indication, there
are a tonne of stars in each galaxy. According to the
European Space Agency, the Milky Way alone
contains some 100 billion stars!
•But that figure is continually changing. The precise
number of stars is continually fluctuating as new
stars are created and old stars die. It's more of a
guess as nobody counts them out individually.

9. References:
• https://opticsmag.com/sky-facts/
• https://www.pacificflying.com/what-are-different-types-of-clouds/
• https://stock.adobe.com/ph/search?k=high+resolution+galaxy
• https://www.quora.com/What-exactly-is-the-Galactic-Center-and-how-can-
I-watch-it
• https://www.istockphoto.com/photo/beautiful-sunset-sky-above-clouds-
with-nice-dramatic-light-view-from-airplane-window-gm1045890176-
279869152
• https://www.forbes.com/sites/startswithabang/2020/09/07/are-any-stars-
visible-in-the-night-sky-already-dead/?sh=65f057277809
• https://www.astronomy.com/astronomy-for-beginners/written-in-the-stars-
how-humans-pick-out-constellations/
• https://stocksnap.io/search/starry

10. 7Interesting
FactsAboutthe
Sky
RAINE ZYIENTH E. DELA CRUZ
8- RED LAUAN