Limb darkening
Videos
Limb darkening is an optical effect seen in stars and planets, where the central part of the disk appears brighter than the edge, or limb. Its understanding offered early solar astronomers an opportun
A filtered image of the Sun in visible light, showing the limb-darkening effect as a dimmer luminosity towards the edge or limb of the solar disk. The image was taken during the 2012 transit of Venus (seen here as the dark spot at the upper right).
Transit of Venus
Videos
A transit of Venus takes place when Venus passes directly between the Sun and the Earth, becoming visible against the solar disk. During a transit, Venus is visible as a small black circle moving acro
Limb darkening
…visible light, showing the limb-darkening effect as a dimmer luminosity towards the edge or limb of the solar disk. The image was taken during the 2012 transit of Venus (seen here as the dark spot at the upper right). Limb darkening is an optical effect seen in stars (including the Sun) and planets, where the central…
William Richard Lavender, Jeremiah Horrocks (1618–1641) (1903), Astley Hall Museum and Art Gallery
Diagram from David Rittenhouse's observations of the 1769 transit of Venus
NASA's SDO Satellite Captures First Image of 2012 Venus Transit
SDO's Ultra high Definition View of 2012 Venus Transit