Internet Archive Book Images:
Image from page 332 of "The Florists' exchange : a weekly medium of interchange for florists, nurserymen, seedsmen and the trade in general" (1888)
Internet Archive Book Images:
Image from page 256 of "Trees; a handbook of forest-botany for the woodlands and the laboratory" (1904)
Internet Archive Book Images:
Image from page 86 of "Arboretum et fruticetum britannicum; or, The trees and shrubs of Britain, native and foreign, hardy and half-hardy, pictorially and botanically delineated, and scientifically and popularly described; with their propagation, culture,
Internet Archive Book Images:
Image from page 59 of "Descriptive catalogue of fruit and ornamental trees, shrubs, vines and plants" (1900)
Christian Gloor:
Earthshine
Sam Droege:
Echinacea purpurea, Howard County, Md, GFG, Helen Lowe Metzman_2018-07-17-15.15.13 ZS PMax UDR
Amazing Sky Photography:
The Pleiades Star Cluster Amid Nebulosity
Ken Krach Photography:
Eagles & A Fish
Ken Krach Photography:
Eagle on the Move
Andrey Snegirev:
Northern light
Andrey Snegirev:
Heavenly fire
Andrey Snegirev:
Northern lights
Andrey Snegirev:
Northern lights
Andrey Snegirev:
Northern lights
Andrey Snegirev:
Northern lights
Andrey Snegirev:
Northern lights
Louise Feige:
Coromandel
TylerIngram:
Mackenzie Beach Tombolo
Ken Krach Photography:
Sea of Gold
NASA's Marshall Space Flight Center:
Supernova Remnant W49B (NASA, Chandra, 02/13/13)
NASA's Marshall Space Flight Center:
Under the Wing of a Dwarf Galaxy (NASA, Chandra, 04/03/13)
NASA's Marshall Space Flight Center:
Galactic Pyrotechnics on Display (NASA, Chandra, 07/02/14)
Smithsonian Institution:
All Eyes on Oldest Recorded Supernova
Smithsonian Institution:
M82: Images From Space Telescopes Produce Stunning View of Starburst Galaxy
GlacierNPS:
Lake McDonald Dock and Aurora
GlacierNPS:
Aurora Arc on Lake McDonald