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.