It is a situation that many scientists debate about during discussions that lead to solutions that have not reached the criteria of which is required. Solar pannels was an idea until it became obsolete in comparison the fact that result in the planets of the far reach of the solar system that are too cold for the suggestion.
There are more ideas such as forging our own rocket that is fuelled by hydrogen fusing into helium but the speed caused would result in the rapid decreace of the technology that will have been overtaken by more advanced technology. Also traveling at the speed of light would slaughter the crew meaning that more suggestions are needed to be put to the boundaries between now and the future.
I would like to know your thoughts.