In the opening scene of Othello, two secret acts had been performed.
1. Iago, an officer of low ranks in the Venetian army, and Roderigo, madly in love with Desdemona, are conversing about both their hatred towards Othello. Iago, because of how Othello promoted Cassio to become a lieutenant instead of giving him the position, and Roderigo because of Othello's marriage to Desdemona and how they eloped.
2. Othello and Desdemona have eloped, leaving Brabantio clueless at first and outraged when he found out.
The theme of deception had clearly been brought up, with these two secret acts, and a few other underlying factors to be considered, including:
1. Roderigo feeling deceived by Iago. The former had asked the latter to put him in good favor with Desdemona, in order for her to love him, but clearly this did not take place.
2. Brabantio feeling deceived by his daughter for running away with Othello, and not asking for his permission regarding the matter.
3. Iago confessing that he merely pretended to adore Othello when in fact, he didn't.
These deceptions supercharged the tone of deceit, jealousy, etc. in the play, leaving the reader or the audience cynical and suspicious about everything. This builds up the gravity of the situation the characters are undergoing.
The whole To Kill A Mockingbird was told from a point of view when Scout was grown up so she realized then, but as a child she was innocent so she did not realize that they was a mob in the first place. So for a short answer No she was aware.
Scientists are searching for planets that are similar to Earth because when resources are used up, we can resort to another planet. Whether it be to travel to live at a different planet or to collect resources from there, either option would be nice for a last resort.