Big Bang
Timeline
Timeline
The estimated age of the universe.
What is 13.8 billion years?
A regular, curved repeating path that an object in space takes around another one.
What is an Orbit?
When the fabric of the universe is stretching out
What is Expansion ?
Stretching of galaxy light toward longer, redder wavelengths.
What is Redshift ?
High-energy ray released during fusion Step 2.
What are Gamma Rays?
The initial conditions of the early universe
What is Hot and Dense?
A curved, oval path that a celestial object takes
What is an Elliptical Orbit?
The center layer of the Sun where super-hot temperatures (15 million K) and high pressure allow fusion to happen
What is the Sun's Core?
Mass ratio of hydrogen to helium in the universe.
What is 75 % Hydrogen and 25 % Helium ?
The element created when four hydrogen nuclei fuse in the Sun.
What is helium?
First two elements created in the universe.
What is Hydrogen and Helium
The time it takes for Earth to complete one revolution around the sun
What is One Year?
Joining light nuclei into a larger nucleus to release energy
What is Nuclear Fusion?
Uniform thermal microwave radiation reaching Earth from all directions.
What is the CMB ?
The point of no return surrounding a black hole.
What is the Event Horizon ?
The creation of space began with this.
What is The Big Bang?
When the planet is far away from the Sun and the planet's speed will --------------.
What is Increase?
It will take this long before gravity squeezing (shrinking) the Sun fails as a power source because it only keeps the Sun warm
What is 30 million years?
Redshift size as a galaxy moves farther from Earth.
What is Larger?
Conditions required for the Sun's core to start fusion
What is 15 million kelvin and High Pressure?
Age of our Sun and solar system
What is 4.6 billion years
The point in a planet’s orbit in which it is the farthest from the sun.
What is Aphelion ?
Region formed when a massive star collapses after a supernova.
What is a Black Hole ?
Current temperature of the Cosmic Microwave Background.
What is 2.7 Kelvin (-270 °C)?
Heavy hydrogen isotope (hydrogen-2) made in fusion Step 1
What is Deuterium ?