This Hacker News thread discusses the potential impact of the asteroid Apophis, even though NASA assures a safe flyby in 2029. One user details a hypothetical impact scenario, describing catastrophic destruction from the initial impact, blast waves, thermal pulses, and significant atmospheric effects comparable to the 1815 Tambora eruption. They estimate immense casualties if the asteroid hits a densely populated area or triggers massive tsunamis if it lands in the ocean. Other users react to the grim scenario, some with dark humor. The conversation then shifts to the politics of asteroid defense. One user points out that the Trump White House's proposed budget for fiscal year 2026 may cancel the OSIRIS-Apex mission. This prompted a debate about bipartisan responsibility and the priorities of older generations in governmental decisions regarding long-term space and science initiatives.