The science of the beginning and development of the universe
Cosmology
This force holds the galaxies together as well as creates the pressure for stars to form
The idea that all planets orbit in an elliptical shape
An object in motion stays in motion is known as this law.
What is Newton's First Law
A galaxy that is characterized by looking like a beyblade
This galaxy includes earth and all the planets in the solar system
Milky Way
The sun and all things orbiting it including all the stars in the sky
A planet which was not acted upon by gravity would do this.
What is fly away in a straight line
A galaxy that is characterized by having no distinct shape
What is an irregular galaxy
The universe was formed this many years ago creating space and everything in it
This gas is the main fuel for a star fusing together to form helium and composes 75% of the universe
What is Hydrogen
The orbital period in days is measured by taking the orbital period in years divided by this number
The force that the sun exerts on the planets
What is Gravity
A galaxy characterized by having a bright light in the middle
What is an elliptical galaxy
The area of all existing space, time and energy
What is the universe
A cloud of gas and dust that stars start in as well as end their life as
According to Kepler's 2nd law, things in orbit move faster at this point in their orbit
What is closest to the sun
The resistance to an objects speed or directional changes
What is inertia
Stars with this mass have much shorter lives
The idea that the world began with an explosion of space, time, and energy
What is the Big Bang Theory
The process through which stars turn hydrogen into helium
What is Nuclear Fusion
The orbital period (T) for venus is 0.615 year and mars is 1.88 years
The distance from the sun (r) for venus is 108.2 x 106 and mars is 227.9 x 10 6
Keplers third law compares the two using what equation
What is
This law states that every object in the universe attracts every other object that is directed along the line of center
What is the law of universal gravity
Scientific equation showing how energy is related to matter
What is E=MC2