Answers to simple Astronomy-related Questions.
Hi my name is Ismaël, and this is my first article on steemit.
What is the Big Bang?
The Big Bang is a theory that states that a large explosion had created the universe.
What is an Astronomer?
An astronomer is a scientist that studies space.
What is a Universe?
A Universe is everything that exists, including stars, planets etc...
How old is the Universe approximately?
From the observable Universe, it is estimated that the age of the universe should be 28 billions light years.
Who is Planck?
Max Planck was a German theoretical physicist that discovered energy quanta which won him the nobel prize in physics in 1918. But his primal contribution was the establishment of quantum theory.
How did he calculate the Universe’s age?
He calculated it by using the cosmic microwave background.
What does NASA stand for?
NASA stands for National Aeronautics and Space Administration.
What is NASA's Jet Propulsion Laboratory?
The Jet propulsion Laboratory was created on the October 31st 1936 (30 years ago) it’s located in California, that is where they construct and operate robotic spacecraft.
Define the speed of light?
Speed of light is the velocity at which light travels in space.
How fast does light travel?
The speed of the light is approximately 300 000 Km/s.
Does light have a mass?
Light is an electromagnetic radiation with no mass.
Is earth at the center of the universe?
Earth is not at the center of the universe but it’s at the center of the observable universe.
How can scientists measure the size of the Universe? List all the methods.
There are two methods used to calculate the size of the universe:
- The measure of the baryonic acoustic oscillations
- The use standard cepheid stars to calculate the distance.
Using the Bayesian model averaging, how big is the Universe compared to the observable Universe?
The Universe is 250 times larger than the observable universe.
What is that distance in light years?
This distance is 7 trillion light years.
What are the possible forms of the universe?
There are three different possible forms of the universe:
- A closed sphere
- Infinite and negatively curved
- Flat and infinite.
How many atoms exist in the Universe?
There are approximately around 10e70 10e80
What is the name of the Galaxy we live in?
The galaxy we live in is called the the milky way.
On which spiral arm is earth located at?
Earth is located on the Orion arm.
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