Total Solar Eclipse 2026 Stages

On August 12, 2026, a total solar eclipse will sweep across the United States, marking the first total eclipse visible from the continental U.S. since 2017. From first contact to totality and beyond, the event will unfold in a sequence of distinct stages that astronomers and observers can anticipate. The path of totality will cross the Midwest and the Great Plains, offering a window of darkness that will last up to 2 minutes and 40 seconds at the eclipse’s peak.

The eclipse begins with first contact, when the Moon’s limb first touches the Sun’s disk, initiating the partial phase. As the Moon’s shadow advances, the Sun’s visible surface shrinks, and the sky gradually darkens; temperatures can drop by several degrees. At second contact, totality starts: the Sun is completely obscured, revealing the corona and creating a dramatic twilight. The corona’s fine structure, solar prominences, and the faint solar wind can be observed with the naked eye or modest telescopes. After the brief peak, third contact marks the end of totality, and the Sun’s disk reappears, gradually restoring daylight. The eclipse concludes with last contact, when the Moon’s limb finally leaves the Sun.

This eclipse offers a rare opportunity for both professional astronomers and the general public to study solar phenomena and to experience the profound visual and atmospheric changes that accompany a total solar eclipse. The event will be widely covered by scientific organizations and media outlets, encouraging safe viewing practices and providing educational resources for communities along the path of totality.