Jesus said, "do for others what you would like them to do for you",
Matthew 7:12. Or, treat others as you would like to be treated.
So if you would like people, for example, to be kind; to buy you surprise gifts, to notice when you are tired and make you a cuppa - then you behave that way towards them. If you would like others to treat you fairly, then treat them fairly. If you would like them to say that you are truthful, then be honest with them and treat what they say as the truth.
And if you wouldn't like people to jump to conclusions about you, or tell lies about you - don't treat them that way.
You have been saying that people at NASA and certain Christians are liars. You don't know them.
Would you like people to treat you like that? To make judgments and jump to conclusions about you, when they know nothing about you?
If not, don't treat them like that.