Fraser Cain (Universe Today)

Magnetic Poles Flip, Hypervelocity Stars From Andromeda, Potential Target for New Horizons | Q&A 393

The latest Q&A episode tackles three headline‑grabbing topics: the prospect of a new Kuiper Belt flyby for New Horizons, the science and risks surrounding an upcoming Earth magnetic pole reversal, and the existence of hypervelocity stars possibly ejected from Andromeda. The host explains that the Vera Rubin Observatory, once operational, should discover thousands of Kuiper Belt objects, giving New Horizons a realistic chance to target one or two more bodies before its fuel runs out. He also notes that recent budget scares threatened the mission, but congressional action secured its modest annual operating costs. On the geomagnetic front, paleomagnetic evidence shows the last reversal occurred 700,000 years ago, with a chaotic transitional period that could expose the planet to heightened solar radiation. Recent X‑class solar flares and historic Carrington‑type events underscore the uncertainty of how modern power grids would fare. Finally, the host argues that stars accelerated by supermassive black holes or supernova kicks in Andromeda are likely streaming through intergalactic space toward the Milky Way, though detecting them remains a challenge. He also highlights the difficulty of securing interviews with Chinese space scientists due to language and geopolitical barriers, suggesting AI‑driven translation as a future solution.