True, but it&#x27;s further from the sun. The amount of stuff hitting you decreases with the square of distance, and Mars&#x27; closest distance from the sun is roughly twice Venus&#x27;. Assuming the simple &quot;sun as a point source in a vacuum&quot; model holds, Mars gets less than 1&#x2F;4 the radiation of Venus.<p>(<a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Inverse-square_law" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Inverse-square_law</a>)