Although the nebula theory is widely accepted, there are some exceptions to that theory that scientists simply have no answer for. The three exceptions to the nebula theory are Uranus, Neptune, and the Kuiper Belt. According to the nebula theory, the inner planets formed when metals condensed into the inner planets, and the gas giant, Jupter and Saturn, formed when gasses condensed. However, because of the gravitational snowball effect due to the masses of Jupiter and Saturn, there simply should not have been enough gas for Uranus and Neptune to form according to the nebula theory. Also, all the rocky particles should have condensed to form the inner planets, so there should not be a belt like the Kuiper belt at all past Neptune. But there is, which contradics the nebula theory.
The standard model for formation of the Solar System is that it formed from a giant interstellar cloud. What is the evidence to support this theory?
Perhaps the most convincing line of evidence supporting this theory are observations of the same process currently happening elsewhere in our Galaxy. It would be strange if our Solar System formed in a different way to every other system in the Galaxy, since physics is supposed to work the same way everywhere. We see stars forming in the depths of giant clouds of gas and dust, and we even see young stars with disks of debris around them, which look just like the debris disk we think the planets formed from.
Other lines of evidence come from simulations of the process. Many astronomers spend most of their time constructing detailed simulations of physical processes in computers. You can put into the simulation details of how the physics should happen and then run it to see what the result is. Current simulations of the formation of a solar system from a cloud of gas work quite well.
Observations of the solar system itself support the theory too. In fact it was these observations which lead to the proposal of the theory in the first place.
1. All the planets orbit the Sun in the same direction. Most of their moons also orbit in that direction, and the planets (and the Sun) rotate in the same direction. This would be expected if they all formed from a disk of debris around the proto-Sun.
2. The planets also have the right characteristics to have formed from a disk of mainly hydrogen around a young, hot Sun. Those planets near the Sun have very little hydrogen in them as the disk would have been too hot for it to condense when they formed. Planets further out are mostly hydrogen, (since that was what was mostly in the disk), and are much more massive because there was so much more material they could be made from.
Finally in this model the Sun is mostly composed of hydrogen. This can also be tested. Observations of the Sun agree incredibly well with what would be expected of a giant ball of mostly hydrogen generating heat by nuclear fusion in the core. The composition can also be measured using helioseismology (the study of 'Sunquakes') and agrees with the theory.
Observations of the solar system support the nebular theory because all planets orbit the Sun in the same direction and in roughly the same plane.
Because it has stood the test of time. It has been around for a while and has not been discredited. In theory terms (the longer a theory exists - the better it is)
cell theory
NO. take Darwin's theory of evolution for example. there is no real evidence, but it is accepted as fact by most in America today.
When observing data and facts that do not have, or conflict with scientific theory, one looks at, and assumes all of the possible reasons for this data, tests it again and again, once one is happy that they have found the most reasonable explanation, it becomes an hypothesis. After this the work is published into the scientific community, where it is scrutinized by other scientists in your field of research, in which they attempt to disprove your hypothesis. If none can disprove it then it eventually becomes accepted in the scientific community. This is when it becomes scientific theory.
No a hypothesis is not the same thing as a theory, but they are very similar. A hypothesis is an educated guess as to how an experiment will turn out, and a theory is an explanation for why something happens the way it does( for a theory to become a theory the same results must be produced multiple times.)
I believe that the hypothesis has something to do with the evolution to the varying ecosystems .in which salamanders live. the aquatic salamander evolved most likely to benefit in its area. A great area that may be referred to for this is Darwin's theory, of natural selection
The nebular hypothesis is the most widely accepted model explaining the formation and evolution of the Solar System.
The nebular hypothesis is the most widely accepted model in the field of cosmogony to explain the formation and evolution of the Solar System (as well as other planetary systems). It suggests that the Solar System formed from nebulous material.
The answer is Nebular Theory
Another idea is that the Earth captured the Moon after its formation. ... The most widely accepted theory is that the Moon was formed.
The most widely accepted theory for how Earth's moon was formed is called the impact theory. It says that the moon formed from a collision between Earth and a Mars-sized object about four and a half billion years ago.
Keep in mind that the word "theory" has a different meaning to scientists from how most people use it in casual conversation. In science, a theory is a hypothesis or group of hypotheses that have been supported with repeated testing. A theory is valid as long as there is no evidence to dispute it. Therefore, theories can be disproven. Basically, if evidence accumulates to support a hypothesis, then the hypothesis can become accepted as a good explanation of a phenomenon. One definition of a theory is to say it's an accepted hypothesis. hi look i just wanna say that we need a sentence not a definition oh yeah and i rly didnt understand that thing you wrote no offense
Theories are ideas accepted as most likely true. Theories are basically hypotheses which have been tested many times by many people and are found to be true.
I think hypothesis
Theory. (a hypothesis is an idea that may be the answer to some question but has not yet been rigorously tested and thus has not yet reached 'theory' status) Theories may be disproven, but that is very unusual, most of the time hypothesis that are disproven through testing never make it to the theoretical stage. For example, while evolution is called a theory, it is widely accepted in science as something that has been rigorously tested and examined, and proven to be true beyond any doubt. There are some accepted 'laws' in science but that is seen in physics or math.
That means that most people would agree to it.
Have you heard the word "theory" used in a different way by non scientists in everyday conversation? How is this use of the word different from a scientific theory?
It is the most accepted theory, but still a theory.