mars has liquid water on it
There is no unnatural light to effect the astronomer and it is further away so you can see further.
Mainly astronomers. But cosmologists and astrophysicists will also be interested in outer space.
They are called astronomers.
Astronomers typically make money through various sources such as research grants, teaching positions at universities, consulting work, public speaking engagements, and writing books or articles. Some astronomers also secure funding from observatories, government agencies, or private organizations for their research projects.
Back in the older times astronomers didn't have our current instruments, but as time went on technology advanced and made it easier for astronomers to do what they do. But to answer your question astronomers depend on Technology because they want accurate observations and plus like i said earlier it is easier to use technology.
If their data supported their hypothesis, then they would make a conclusion.
mars has liquid water on it
The following step would be to collect data and make observations, so that a hypothesis can be formed.
Using ants for science projects allows you to make a hypothesis about them, do your test, and make a conclusion. The best conclusion would vary depending on you hypothesis. If you hypothesis was that ants like sweet things better than sour, your conclusion would be that they did or did not like sweet things better.
Certainly, you are free to make a hypothesis about anything. For example, I might hypothesize that you would enjoy eating pizza tonight. I don't actually know you, and you have not told me anything about your eating preferences, but even so, I can make that hypothesis. A hypothesis does not have to be true, it only has to be reasonable.
An estimate or a hypothesis.
When you are using the scientific method, you would try to imagine a hypothesis which explains an observation, but you might not succeed. A hypothesis that does not explain an observation would be considered a failed hypothesis. You would then need to invent a different hypothesis.
no
maybe because planets are stupid
You have to make your own hypothesis, that is the whole point of a hypothesis.
By using it to make a prediction. (The most famous was the (relativity) prediction that gravity would bend light.)
The best way to make a hypothesis is to educate yourself on the topic. Then develop a question that you can answer.