Lab 02 · Cooling
Vacuum has no air to blow. Net heat leave ≈ εσA T⁴. Drag the sliders. The 15-minute Suncatcher number is what a small radiator plus a thermal mass looks like — a design choice on a rideshare, not a proof that space cooling is impossible.
P_rad = ε σ A T⁴ · σ = 5.67×10⁻⁸ W/m²K⁴ · space sink ≈ 3 K, so incoming IR is negligible here.