IUE observation of Uranian emissions in hydrogen Lyman alpha (H Ly-&agr; over, the past four years have recently been summarized by Clarke et al. [1985>. Over this time period they find an average H Ly-&agr; brightness of 1260 R which they estimate is composed of 200 R of solar scattered radiation and 1060 R from a collisional source. A third component, not considered by previous authors, is the reflection of H Ly-&agr; emissions from the interstellar wind. Hydrogen in the interstellar wind forms an extended source of H Ly-&agr; whose importance relative to the solar flux increases with distance from the sun. We demonstrate that scattering of interstellar H Ly-&agr; is more important than scattering of solar H Ly-&agr; for reasonable values of H column abundance and, in fact, may make up 10--40% of the observed signal. Large H column abundances are still required to explain the H Ly-&agr; brightness solely on the basis of resonant scattering; therefore it is likely that the emissions are due in part to collisional sources and in part to the scattering of interstellar H Ly-&agr; with solar scattering playing a minor role.