What do you consider to be interstellar travel? The two voyagers haven't met the qualification and they won't for thousands upon thousands of years. Moreover, no human beings have even gone beyond the boundaries of the earth-moon system. There is no technology for making human led starflight possible. For example, the almighty antimatter/matter reaction would propel objects fast but too fast for there own good. The kinetic energy formula clearly states that a grain of sand traveling at even a minute fraction of c would carry tons of chemical explosive energy equivalent. What is your basis for claiming such a vague possibility (the starflight can be done statement) to being even nearly close to fruition? tte