A casual explanation of star formation and movement.
A hypothesis for the formation of our solar system.
A scientific explanation of how the universe expanded from an extremely hot and dense state.
A philosophical concept about time.
About 13.8 billion years ago.
About 4.6 billion years ago.
About 10 million years ago.
About 1 trillion years ago.
Only stars and galaxies.
Space, time, matter, and energy.
Planets and moons only.
Just energy.
The cosmic microwave background radiation and the expansion of the universe.
The position of Jupiter's moons.
The distribution of black holes in the universe.
The planetary orbits around the sun.
Stephen Hawking.
Albert Einstein.
Georges Lemaître.
Isaac Newton.
It is the thermal radiation left over from the time of recombination in Big Bang cosmology.
The light emitted by stars in distant galaxies.
Ultraviolet radiation from the sun.
Infrared radiation from the Earth's atmosphere.
That the universe is contracting.
That the universe is expanding.
That the universe is stationary.
That the universe is rotating.
A point in time where the universe is thought to be infinitely dense and infinitely hot.
A specific type of black hole.
The center of our galaxy.
A theory about infinite time.
It supports the theory with the observation that galaxies are moving away from us.
It predicts the end of the universe.
It explains the composition of stars.
It describes the structure of the Milky Way.
The process of formation of new atomic nuclei from pre-existing nucleons (such as protons and neutrons).
The splitting of atoms to create energy.
The creation of stars.
Formation of rocks and minerals.
Iron and nickel.
Carbon and oxygen.
Hydrogen, helium, and traces of lithium.
Lead and gold.
A rapid expansion of the universe that happened just after the Big Bang.
An increase in temperature of stars.
The process of star formation.
An economic term unrelated to cosmology.
By suggesting matter was evenly distributed initially.
Inflation theory suggests rapid expansion smoothed out irregularities.
By assuming that only local galaxies form a uniform pattern.
Through gravitational pull of nearby galaxies.
Return to its original state.
Stay as it is forever.
Possibilities include continuous expansion, collapse back into a singular state, or reaching a stable size.
Transition into a multiverse.
The Big Bang Theory proves the universe is shrinking.
Unlike the Steady State Theory, the Big Bang Theory suggests the universe had a definite beginning.
Both theories are identical in explaining the universe's origin.
Big Bang Theory denies the existence of other galaxies.