and you can get to uranus really quickly. and then on the way out to the solar system, we get intrastellar at that point. i'm doing these things, and i said how can we ever sell it? but the key to selling it is to notice that every event happens in a four-year time span, if it doesn't, you're never going to get anything from the government. that's how it works and let me show you how we found it. the next slide shows the actual thing i used to figure out you could do it. along the bottom are the dates, i was looking to the next 10 or 20 years from when i was working in 1965. on the other axis, the vertical axis, these were the angles i was showing you in that slide. i can see something really remarkable here. that in the latest 1980s or so. all of the planets were all on the same side of the sun, i was like oh, my gosh, i better look there, because that means you could probably get one spacecraft that could get all of those planets and that's how it happened. that's how that was discovered and you have to run all these trajec