Jump to content
Necesitamos tus fotos para el Catalogo Messier Leer más... ×
Astronomia - Espacio Profundo
  • Registrarme
Conéctate para seguir esto  
admin

APOD - Craters and Shadows at the Lunar Terminator - 2018-05-22

Recommended Posts

admin

Craters and Shadows at the Lunar Terminator

TerminatorMoon_Zia_960.jpg

Why does the right part of this image of the Moon stand out? Shadows. The terminator line -- the line between light and dark -- occurs in the featured image so that just over half the Moon's face is illuminated by sunlight. The lunar surface appears different nearer the terminator because there the Sun is nearer the horizon and therefore causes shadows to become increasingly long. These shadows make it easier for us to discern structure, giving us depth cues so that the two-dimensional image, when dominated by shadows, appears almost three-dimensional. Therefore, as the Moon fades from light to dark, shadows not only tell us the high from the low, but become noticeable for increasingly shorter structures. For example, many craters appear near the terminator because their height makes them easier to discern there. The image was taken two weeks ago when the lunar phase was waning gibbous. The next full moon, a Moon without shadows, will occur one week from today. Follow APOD on: Facebook, Google Plus, Instagram, or Twitter
Talha Zia
  • Like 1

Compartir este post


Enlace al post
Compartir en otros sitios
Conéctate para seguir esto  

×

Important Information

Términos y condiciones de uso de Espacio Profundo