The basic idea is to extrapolate the movement of galaxies into the past: at a certain moment, they were very close together.
The Universe.
by using the distance from Earth to various galaxies and by calculating the ages of old, nearby stars.
The Big Bang Theory is widely considered by scientists and theologians as the way in which the universe started. Even the Pope accepts it.
Scientists track tornadoes using Doppler radar and reports from eyewitnesses.
Using mathematical models of the sun.
The Universe.
by using the distance from Earth to various galaxies and by calculating the ages of old, nearby stars.
The universe is expanding.
that stars are moving away from us, as if flung out from an explosion, helping support the big bang theorey and showing us that the universe is expanding
The Big Bang Theory is widely considered by scientists and theologians as the way in which the universe started. Even the Pope accepts it.
The birth of the universe has been debated throughout the years and only one theory continues to persist, the the Big Bang. Using theories and observations from many scientists. the Big Bang provides a simplistic and logical explanation reguarding the orgin of the universe
Scientists test ideas about chemical evolution by using computer models.
I believe that yes it is correct to say the phrase in the universe. It depends how you are using it.
As a species, we may not survive the Earth's polarity shift. Let's shift it into high gear, boys!
Non-scientists provide additional sources of data that scientists can use.
No, because the scientists did not have a hypothesis
The main piece of evidence (there are others) is the redshift from distant galaxies. This is usually interpreted as a result of the Doppler effect - i.e., the galaxies are moving away from us.