The science of space

istockphoto 1035676256 170667a
istockphoto 1035676256 170667a

Ever since humans first started theorizing about the universe, we’ve struggled to understand it. It’s expanded by leaps and bounds ever since (and still keeps on expanding), but the basic questions remain the same: 

Why are we here? How did it all begin? What is out there that we never see? The answers are elusive, but scientists have come up with some fascinating theories about space. 

And these theories will often lead to their own findings, which in turn further expands our knowledge of this mysterious craft floating around in front of us.

Here at has some more information about the science of space.

Fundamentals of Space

The universe is made up of atoms, protons, neutrons, electrons, quarks and other subatomic particles. And these are all born within stars. Once a star has burned up all the hydrogen in its core, it collapses. 

At this point it undergoes nuclear fusion in its core to start fusing heavier elements together to make heavier elements. 

Because the Sun is only halfway through this process it will live for another 4-5 billion years before collapsing again.

Here are some points discussed about the science of space-

1. Everything we see in the universe was at some point a star.

The solar system consists of our Sun and its family of planets and moons. This means that all the planets in the solar system were once stars. 

The reason they become stars is because when they run out of hydrogen, they collapse on themselves and start fusing heavier elements at their cores until they explode.

2. Takes less than 200,000 years for Earth-sized planets to form around its stars.  

This process only takes place during the infancies of a star’s life, but scientists believe if two stars merge, it may take up to 600 years for planets to form around them ,most likely due to feedback from gravitational forces and nuclear reactions.

3. The Sun is not as big as you think it is.

The diameter of the sun is about 864,330 km from side to side at its equator, but if you took a car and made it out of the same material as the sun, it would only be about 2 inches wide at its hottest point.

4. Can a black hole kill you?

No matter what a black hole does to you, death is still going to happen simply because your body will be torn apart by the gravitational force before you even have a chance to reach the event horizon.

5. What exactly is the event horizon?

The event horizon is the point beyond which nothing can escape. Any object that enters it will never be able to leave. 

To someone looking in, the event horizon appears like an unbreakable barrier. If you were to fall inside a black hole, your whole body would be torn apart before you even reached it.

6. There are very few black holes in the universe.  

Astronomers have only found about 2000 black holes throughout the entire universe.

The Milky Way is home to at least one supermassive black hole that contains the weight of four million suns. 

Scientists estimate that this monster is 4-12 billion years old and resides in the center of our galaxy, making it difficult to see because it’s so far away, but its massive gravitational force can be felt by all the stars in its region.

7. Scientists found a star that spins fast, It’s breaking the laws of physics.  

The star HE 0437-5439 is spinning so quickly it has broken the universal speed limit. The speed of light is 299,792 km/s or 186,282 mi/s, but this star is spinning so fast that its angular velocity is 2,000 km/s. 

This means if you were to go on the surface of this star, you would be moving at 2 million miles per hour.

8. The universe gets wider with time because of dark energy .  

When space began to expand after the Big Bang nearly 14 billion years ago, its expansion rate was much slower than it is today. 

This is because the universe wasn’t “nice enough” to keep up with itself. The universe had some dark energy in it at first, causing it to expand faster than normal. 

Eventually the dark energy began to slow down, then eventually even decreased over time, slowing down the expansion of the universe compared to how fast it once was.

9. What exactly is dark energy?  

Dark energy is a mysterious force that drives the universe’s expansion at an accelerating rate. It may be a form of gravity or some other force which has yet to be discovered, but so far there have been no signs of its existence on earth or any other planet in our solar system or galaxy.


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