The two trees of the Valinor served as more or less the sun and moon for the rest of Arda. They had 11 hours of light each with 1 hour of dawn or dusk each much like we understand the concept of day and night.
Morgoth had the great spider Ungoliant try to steal the light from the trees because he coveted and hated the light and beauty they gave. It fits well into his character as a Devil-like figure, since he is a failed creator who cannot create, only corrupt what was made by good, as Tolkien would say it.
The two trees of the Valinor served as more or less the sun and moon for the rest of Arda. They had 11 hours of light each with 1 hour of dawn or dusk each much like we understand the concept of day and night.
Morgoth had the great spider Ungoliant try to steal the light from the trees because he coveted and hated the light and beauty they gave. It fits well into his character as a Devil-like figure, since he is a failed creator who cannot create, only corrupt what was made by good, as Tolkien would say it.