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
Dark-Dave: Here Rusty DSC_2582
Dark-Dave: Rusty In The Landscape-Whiteadder Water DSC_2538
Dark-Dave: Sheep In the Landscape DSC_2526
Dark-Dave: in flight DSC_2439
Louise Feige: Coromandel
TylerIngram: Mackenzie Beach Tombolo
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