Solar radiation and flares are worth mentioning, but are easily solved by the "hide underground" or "hide under water tanks" solutions. > They also represent a

Solar radiation and flares are worth mentioning, but are easily solved by the "hide underground" or "hide under water tanks" solutions. > They also represent a major obstacle to a project to terraform Mars because the charged particles will strip away the atmosphere you’re trying to build. Not at a rate fast enough to matter, it's negligible on human timescales.