There are no facts in science, only scientific theories. Scientific theories are different from everyday theories. Scientific theories have to be supported by observational evidence, must be tested and continually tested. The reason that they are not scientific facts is that it is impossible to test every possible case, and they only become facts when something is true for all possible cases.

In astronomy, we have many scientific theories. The most famous is probably the Big Bang Theory. Interestingly, scientists often spend their entire careers trying to disprove a scientific theory. Although you cannot prove one, it only takes one case to disprove a scientific theory.

In these articles I often refer to scientific theories. They are what scientists believe to be correct at the time. As we learn additional new information, the scientific theories change or are replaced.

COVID-19 continues to be a challenge. The observatory has not reopened yet.


Aaron Clevenson
Author: Aaron ClevensonEmail: This email address is being protected from spambots. You need JavaScript enabled to view it.
I am the observatory director at the Insperity Observatory in Humble ISD. I am also an adjunct astronomy professor at Lone Star College-Montgomery where I teach solar system astronomy and stars and galaxies astronomy. I am the author of the astronomy textbook, “Astronomy for Mere Mortals.” I am a past president of the North Houston Astronomy Club, and was the chair of Astronomy Day in Southeast Texas in 2015 and 2016. He is an observing program director with The Astronomical League, coordinates their Master Observer Progression Awards, and has authored six of their observing programs.

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