Noctilucent clouds seen from Denmark in July. These clouds are in a very high altitude and are illuminated by the sun at night

---

Size: 4928px × 3264px
Photo credit: © Kim Christensen / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: astronomy, blue, cloud, illuminated, landscape, nature, night, nightscape, noctilucent, phenomen, silhouette, sky, steel, steelblue, sun, weather