The universe is a closed system, and it was not designed for us to explore it. But we are going to explore it anyway.Space is not an empty vacuum; it is a magnificent, shifting puzzle of celestial mechanics that dictates exactly where mass can go and how fast it can travel. This talk is a cinematic journey from the launchpad to the absolute edge of observable reality. Together, we will zoom out order of magnitude by order of magnitude, witnessing how the cosmos rewrites its own physical rules the further we dare to venture from our home star.We will navigate the crushing gravity wells of the inner planets, surf the chaotic orbital currents of the solar system, and confront the ultimate astronomical boundaries: relativistic time dilation, the extreme physics of the interstellar medium, and the awe-inspiring power of Dark Energy driving the metric expansion of spacetime.You don't need an advanced degree in physics to take this ride, just a sense of wonder. Join us to experience the breathtaking realities of the deep dark and discover the ingenious astrodynamics we use to traverse the celestial expanse.
Bio:
Achal Gupta is a third-year Mechatronics Engineering student at the University of Cape Town and the Lead of the UCT Space and Astronomy Society. A lifelong student of the cosmos, Achal’s technical foundation is built on high-level competitive mathematics and computing, having ranked 4th globally in A-Level Computer Science and competed in the International Mathematical Olympiad (2021, 2022). He is focused on the intersection of hardware and astrophysics, and he recently presented at the 23rd Young Scientists Conference on Space Research (YSC 2026) in Moscow, Russia. Outside of his academic work, he is an avid hiker who also enjoys capturing the landscapes of the Western Cape through mobile photography.