Yes, it already uses a reflective blanket. https://www.scienceabc.com/nature/universe/is-it-hot-or-cold-at-the-international-space-station.html#how-does-the-iss

Yes, it already uses a reflective blanket. https://www.scienceabc.com/nature/universe/is-it-hot-or-cold-at-the-international-space-station.html#how-does-the-iss-deal-with-the-radiation-in-space https://www.scienceabc.com/nature/universe/is-it-hot-or-cold...