2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/139393A planetary transit produces both a photometric signal and a spectroscopic signal. Precise observations of the transit light curve reveal the planetary radius and allow a search for timing anomalies caused by satellites or additional planets. Precise measurements of the stellar Doppler shift throughout a transit (the Rossiter-McLaughlin effect) place a lower bound on the stellar obliquity, which may be indicative of the planet's migration history. I review recent results of the Transit Light Curve project, and of a parallel effort to measure the Rossiter effect for many of the known transiting planets.8 pages, to appear in "Extreme Solar Systems," ASP Conference Series, ed. Debra Fischer, Fred Rasio, Steve Thorsett and Alex WolszczanAstrophysicstext