4 ms·
According to the first Google hit, https://scitechdaily.com/nasas-parker-solar-probe-the-fastest-spacecraft-ever-just-skimmed-the-sun-at-430000-mph/ https://sci
by Scarblac 1y ago
According to the first Google hit, https://scitechdaily.com/nasas-parker-solar-probe-the-fastest-spacecraft-ever-just-skimmed-the-sun-at-430000-mph/ https://scitechdaily.com/nasas-parker-solar-probe-the-fastes... , the fastest we've made so far went 430k mph (falling towards the sun), or about 0.064% of c. Good guess.