grammargeek

Auroral Corona, Kirkjufell, Iceland

Fox Under the Northern Lights (Lapland)

Phytoplankton Bloom, Norwegian Sea (NASA Earth Observatory)

Travertines of Pamukkale, Turkey (Talip Çeti)

Solar Flare detail, Inouye Solar Telescope (NSF/NSO)

Saturn’s rings (Voyager, NASA)

Iceland aerial photo - Rositsa Dimitrova

Star Trails, Mullard Radio Astronomy Observatory

IRAS 04302 Butterfly (JWST)

Horsehead and Flame

Veil Nebula Supernova Remnant

Australian Coastal Spine (Satheesh Nair)

Colorado River (NASA Earth Observatory)

Tidal Creek, Lake Cakora, New South Wales, Australia (S. Chape)

DECam, Víctor M. Blanco 4-meter Telescope, Cerro Tololo, Chile