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Hi, I am Bubba

Today, we are going to go on an adventure 

through the Universe and discover how space was 

created! 

Along the way, we are going to face many 

challenges, but also make amazing discoveries. 

So get ready, because here we go!

There is strong evidence that the solar system formed about 

4.5 billion years ago and it took about 500 million years 

for the planets to form in their current location and orbits.

The Big Bang is believed to be the start of the universe. 

At this time, the universe was a really hot and compact ball. 

Then BAM! 

The ball exploded and expanded throughout the universe.

 After the explosion, the Universe cooled and the formation 

of stars and planets began.

The sun formed from a big cloud of gas and 

dust. The cloud was dark and cold, and its 

gravity caused it to fall together. When nearly 

all the gas and dust had fallen together, the 

center became very hot and very dense.

Earth is about 93,000,000 miles from the 

sun. If we could build a highway and drive a 

car to the sun at 65 miles per hour, it would 

take over 160 YEARS to get there!

In the solar nebula around the sun, dust and ice particles 

occasionally collided and combined. These tiny particles formed 

larger bodies that soon became something called planetesmials 

up to a mile or two across. 

If a cloud is dense enough, its own gravity causes it to collapse 

onto itself. The solar system is thought to have collapsed from a 

cloud that was initially about a million times larger than the 

current solar system!! When the planetesimals started to collide 

with one another, they formed planets. 

As the solid materials were heated by the collisions, they 

became liquid. This heating happened to all planets - but the 

bigger the planet the more heat that was generated.  

Slowly the planet begins to loose heat - the smaller the planet, 

the quicker it lost heat.

Oh NOOO! It is my worst enemy. 

Help me defeat him by yelling with me!!

"Ms. Woods is the best teacher ever" Ms. Woods is the best 

teacher ever"

Wow! Thank you!! 

Now we can continue on with our journey with no 

interruptions. 

I am eternally grateful to each one of you :)

All of these stars were created when giant gas 

clouds start to clump together and collapse in upon 

themselves. 

This clumping is often caused by energy waves 

from nearby exploding supernovae. As they 

collapse, the molecules that form the clouds 

compress in upon each other to form helium and 

hydrogen.

Mercury is the first planet of the Solar System!

The section of nebula that formed Mercury formed 

a dense, metallic core with a thin silicate crust on 

the surface.

As asteroids bombarded the surface, internal lava 

flowed out and formed a new crust.

Over time, Mercury's core cooled down and 

shrunk. As a result, the outer crust cracked.

Another wave of lava covers the older crust.

Aside from occasional asteroids, Mercury will 

remain generally unchanged for centuries.

Our next step is to the second planet in the Solar 

System, Venus!!

Venus was formed when large amounts of dust and 

gases gathered together over many years to form 

the planet. 

Venus is believed to have been a victim of a large 

collision. This is because its rotation is reversed 

from the rest of the planets in the solar system.

Third, is our home planet -- EARTH! 

During the first period in which the Earth existed, the surface 

was under a continuous shower by meteorites, and volcanism 

is believed to be severe due to the large heat flow. The gas 

and volcanic activity produced the atmosphere. When water 

vapor began to condense, the vapor gathered in the 

atmosphere and cooled the exterior of the planet to form a 

solid crust and produced the oceans. 

As the surface continually changed over hundreds of millions 

of years, continents formed and broke up. The continents 

migrated across the surface, occasionally combining to form a 

supercontinent.

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