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Almost everything we know today about the stars and their life cycle is a direct result of the correct interpretation of our main source of evidence on the stars (their spectra) by a graduate student of very Young appointed Cecilia Payne.
Before its discovery in 1925 astronomers thought all the stars were made on exactly the same elements as the earth, in the same proportions as their spectra appear to show that(spectra also show that, of course).
Now, with Cecilia, we know that the differences are due simply to different amounts of ionization of hydrogen and NOT to the various elements.
Since the hydrogen atom is the only simple enough to do what we do out in the way they do it all started to fall in place and we jumped light years ahead in our understanding
What else can I help you with?
What are three theories that have changed due to new evidence?
One significant theory that changed due to new evidence is the theory of plate tectonics, which was bolstered by discoveries in seafloor spreading and the magnetic alignment of rocks. The understanding of the origin of the universe has evolved with the Big Bang theory gaining support from cosmic microwave background radiation discoveries. Additionally, the theory of evolution has been refined with the introduction of genetics, particularly through the understanding of DNA and genetic mutations, providing a clearer picture of how species adapt and evolve over time.
Why have the number of stars changed?
The number of stars in a galaxy can change due to the birth and death of stars, as well as interactions with other galaxies like mergers and collisions. Additionally, new stars can form from the gas and dust present in galaxies, contributing to changes in the total number of stars over time.
Significant of dead stars?
Dead stars, such as white dwarfs, neutron stars, and black holes, play a crucial role in understanding the lifecycle of stars and the universe. They contribute to the formation of new stars by enriching the interstellar medium with heavy elements. They also serve as laboratories for testing theories of physics under extreme conditions. Additionally, the remnants of dead stars can provide insights into the history and evolution of our galaxy.
Has the number of stars changed?
Yes, stars are constantly being created and destroyed. Stars can last millions or billions of years, but there are so many of them out there that it's pretty common for them to come and go.
Can the future cause a theory to be revised or discarded?
Yes, new evidence or developments in the future can cause a scientific theory to be revised or even discarded. As our understanding of the world grows and advances, theories must evolve to fit the new information. This process is a fundamental part of the scientific method.
Can a hypothesis be changed?
Yes, a hypothesis can be changed based on new evidence or data that contradicts the original hypothesis. It is important for scientists to revise their hypotheses in order to accurately reflect the most current understanding of a phenomenon or issue.
Which one of the following statements accurately describes a theory aIts a suggested answer to a question bIt can be changed when new discoveries are made?
A theory is a suggested answer to a question that is based on substantial evidence and reasoning. It can indeed be changed or refined when new discoveries or evidence emerge, reflecting the evolving nature of scientific understanding. Thus, both statements accurately describe aspects of a theory.
What ideas about the atom changed when new evidence is discovered?
New evidence has led to the understanding that atoms are not indivisible, as previously thought, but are composed of subatomic particles like protons, neutrons, and electrons. Additionally, the discovery of isotopes showed that atoms of the same element can have different numbers of neutrons, leading to a more complex understanding of atomic structure.
What changed about the atom when new evidence was discovered?
atoms cannot be divided
When was the atom changed when new evidence was discovered?
atoms cannot be divided
Could a scientific knowledge be changed or modified?
yes because theories are always changed when found new evidence
What ideas about atoms changed when new evidence was discovered?
atoms cannot be divided
What are three theories that have changed due to new evidence?
One significant theory that changed due to new evidence is the theory of plate tectonics, which was bolstered by discoveries in seafloor spreading and the magnetic alignment of rocks. The understanding of the origin of the universe has evolved with the Big Bang theory gaining support from cosmic microwave background radiation discoveries. Additionally, the theory of evolution has been refined with the introduction of genetics, particularly through the understanding of DNA and genetic mutations, providing a clearer picture of how species adapt and evolve over time.
When can scientific theories be changed or replaced?
Scientific theories can be changed or replaced when there has been significant evidence for the change. The scientific method must be used to create a new hypothesis, which must then be proven.
Can a theory be rejected?
Yes, a scientific theory can be rejected if new evidence or observations contradict its predictions or if a more accurate theory is developed. The rejection of a theory is an essential part of the scientific process that helps refine our understanding of the natural world.
In a group discussion which described one of the primary purposes of synthesizing claims and evidence?
To create new understanding
In a group discussion which describes one of the primary purposes of synthesizing claims and evidence?
To create new understanding
