Explore This Section - Science - Science Activation - Science Through Shadows: How… - Overview - Learning Resources - Science Activation Teams - SME Map - Opportunities More - Science Activation Stories - Citizen Science - Science Activation Opportunities 6 min read # Science Through Shadows: How Astronomical Alignments Reveal the Universe When one celestial object passes in front of another, it can cast a shadow that travels across space – and sometimes across Earth. These moments of alignment, known as eclipses, occultations, and transits, allow scientists to study distant objects in remarkable ways. By observing how light changes when an object briefly blocks another, astronomers can measure sizes and shapes, detect atmospheres, and refine the orbits of asteroids and planets. From left to right: Image of the total solar eclipse of 2024, an asteroid occulting a distant star, and an exoplanet transiting a star.…