24.1 Apollo Analemma

Source: Anthony Ayiomamitis / www.perseus.gr / The World At Night

24.2 Sunset Arch Escalante

Credit: Royce Bair / www.RoyceBair.com

24.3 Aurora Over Australia

Source: Alex Cherney / www.terrastro.com / The World At Night

24.4 Red Rocks Star Trails

Source: Steven Christenson / www.StarCircleAcademy.com

24.5 Total Eclipse of the Sun from Lauca National Park

Source: Alan Dyer / AmazingSky.com

24.6 Comet Hale-Bopp and the Great Pyramid of Cheops, Giza, Egypt

Source: John Goldsmith / www.celestialvisions.com.au

24.7 Bioluminescence Gippsland Lakes

Source: Phil Hart / www.philhart.com

24.8 Milky Way Tufa

Source: Lance Keimig / TheNightSkye.com

24.9 Snowy Range Perseids

Source: David Kingham / www.davidkingham.com

24.10 Denali & Aurora

Source: Dora Miller / www.AuroraDora.com

24.11 Joshua Forest

Source: © Marc Muench / MuenchWorkshops.com

24.12 Looking South

Source: Ian Norman / lonelyspeck.com

24.13 True Image of False Kiva

Source: Wally Pacholka / Astropics.com / The World At Night

24.14 Sydney Harbour

Source: Bryan Peterson / bryanfpeterson.com

24.15 Milky Way Aurora

Source: Tony Prower / TonyPrower.com

24.16 A Colorful Night of Iceland

Source: Babak Tafreshi / The World At Night / twanight.org

24.17 Waterton Lake Eclipse

Source: Yuichi Takasaka / http://blue-moon.ca / The World At Night

24.18 Moonlit Yosemite Falls

Source: Brenda Tharp / www.brendatharp.com

24.19 Northern Lights Over Bleik, Norway

Source: Andy Williams / MuenchWorkshops.com