embryos develop this space, frog embryos develop in space. there was this wide range of experimentation that i think is also part of the heart blood of space exploration, and why you use microgravity as a platform. it was both, the visual, the physiological, but the work and how we can use it back here on earth. those visions hold for me. and scott, i would kind of ask you the same question. what is it like or the things that yo keep close to you that changed you? just seeing the curvature of the earth and crossing that barrier. what are the things you keep as the most impactful? >> certainly the first time you