Curated dataset · not a live feed · 97 authored moments
Rarest World — the rarest place on Earth
An Earth-observation console. A scan line sweeps the night side of the planet and
ignites a ping for every rare natural or orbital coincidence inside its observation
window. Open a ping and you get the physics behind it, the conditions that had to line
up, and the odds of all of them holding at once — each condition with its own
chance. The windows are curated scheduling, not observation: nothing here reports what
is happening now.
This is a curated catalogue of 97 documented phenomena — aurora
driven to mid-latitudes, milky seas, brinicles, penitentes, catatumbo lightning,
synchronous fireflies, moonbows, sailing stones — and a SPACE class of
astronomical events anchored to the ground you would have to be standing on: totality
tracks and Baily’s beads, transits of Venus and Mercury, lunar and asteroid
occultations, great comets, the gegenschein. Each carries its position, observation
window, the conditions it needs and field notes. It is not a live sensor feed and never
claims to be.
More of Rarest World
Aurora — Can you see the aurora from your city tonight? NOAA’s live Kp forecast, your dark hours and the cloud overhead, city by city — and every solar and lunar eclipse to 2030.
Front Row — Where to stand when the sky does something extraordinary: a planning simulator and seat guides comparing real vantage points for aurora, eclipses, meteor showers and more.
Not Normal — The anomaly field: 53 places, each read against its own 75-year record — a modelled demonstration dataset, not observed data.
The catalogue
Milky sea bioluminescence — North-west Indian Ocean, International waters · WATER · rarity 96 · 1 in 6.25M
Totality over the ice sheet — Union Glacier, Ellsworth Mountains, Antarctica · SPACE · rarity 90 · 1 in 2.86M
Baily's beads and the diamond ring — Carbondale, southern Illinois, United States · SPACE · rarity 86 · 1 in 1.90M
One planet occulting another — Royal Observatory, Greenwich, United Kingdom · SPACE · rarity 85 · 1 in 1.62M
Shadow bands before totality — North West Cape, Exmouth, Australia · SPACE · rarity 83 · 1 in 1.30M
Sailing stones in motion — Racetrack Playa, Death Valley, United States · LAND · rarity 82 · 1 in 1.11M
Great conjunction at closest approach — Griffith Observatory, Los Angeles, United States · SPACE · rarity 80 · 1 in 893K
Brinicle reaching the seabed — McMurdo Sound, Antarctica · WATER · rarity 77 · 1 in 625K
Total solar eclipse umbra — Luxor, Upper Egypt, Egypt · LIGHT · rarity 72 · 1 in 322K
Heat record with gargantuan hail — Cordoba Province, Argentina · STORM · rarity 72 · 1 in 333K
Annular eclipse antumbra — Albuquerque, Rio Grande valley, United States · SPACE · rarity 68 · 1 in 213K
Daytime bolide airburst — Chelyabinsk, southern Urals, Russia · SPACE · rarity 66 · 1 in 159K
Transit of Venus — Mauna Kea summit, United States · SPACE · rarity 63 · 1 in 106K
Selenelion at moonset — Cadillac Mountain, Acadia, United States · SPACE · rarity 62 · 1 in 97.0K
Sungrazer surviving perihelion — Perth Observatory, Bickley, Australia · SPACE · rarity 61 · 1 in 82.3K
Re-entry fireball train — Portland, Willamette Valley, United States · SPACE · rarity 58 · 1 in 59.5K
Lunar eclipse with a volcanic umbra — Mount John, Lake Tekapo, New Zealand · SPACE · rarity 57 · 1 in 54.3K
Asteroid occulting a star — Chubut steppe, Argentina · SPACE · rarity 55 · 1 in 41.2K
Full halo complex — Dome C, Concordia Station, Antarctica · LIGHT · rarity 53 · 1 in 33.3K
Transit of Mercury — La Silla Observatory, Chile · SPACE · rarity 48 · 1 in 18.0K
Aurora at mid-latitude — Front Range, Colorado, United States · LIGHT · rarity 46 · 1 in 13.5K
Comet tail disconnection event — Observatorio del Teide, Tenerife, Spain · SPACE · rarity 46 · 1 in 13.3K
Tropical cyclone beside an erupting volcano — Mayon, Bicol, Philippines · STORM · rarity 44 · 1 in 10.4K
Aurora above an active fissure — Reykjanes Peninsula, Iceland · LIGHT · rarity 42 · 1 in 8,929
Lunar occultation of Venus — Siding Spring, Warrumbungle, Australia · SPACE · rarity 42 · 1 in 8,889
Mothership supercell structure — Texas Panhandle, United States · STORM · rarity 41 · 1 in 7,407
Mass coral spawning — Central Great Barrier Reef, Australia · LIFE · rarity 41 · 1 in 7,407
Waterspout outbreak — Lake Michigan, United States · WATER · rarity 39 · 1 in 5,556
STEVE with picket fence — Central Alberta, Canada · LIGHT · rarity 38 · 1 in 5,442
Meteor storm outburst — North Savo, Finland · SKY · rarity 38 · 1 in 5,208
Five planets in orbital order — Wadi Rum, Jordan · SPACE · rarity 38 · 1 in 5,000
Rotating ice disc — Presumpscot River, Westbrook, Maine, United States · WATER · rarity 37 · 1 in 4,444
Cappuccino coast sea foam — Yamba, New South Wales, Australia · WATER · rarity 35 · 1 in 3,472
Blood Falls discharge — Taylor Glacier, McMurdo Dry Valleys, Antarctica · LAND · rarity 35 · 1 in 3,704
Gegenschein at the antisolar point — NamibRand Nature Reserve, Namibia · SPACE · rarity 35 · 1 in 3,472
Snow roller field — Central Ohio, United States · LAND · rarity 34 · 1 in 3,125
Snow on Saharan dunes — Ain Sefra, Naama Province, Algeria · LAND · rarity 34 · 1 in 3,333
Perigee full moon at the horizon — Cape Byron, Australia · SPACE · rarity 34 · 1 in 3,175
Lake-effect thundersnow — Eastern Lake Erie shore, United States · STORM · rarity 33 · 1 in 2,857
Great comet with a naked-eye tail — Sutherland, Northern Cape, South Africa · SPACE · rarity 33 · 1 in 2,886
Red sprites above a storm complex — Western Oklahoma, United States · LIGHT · rarity 32 · 1 in 2,381
Fire-generated thunderstorm — Central Interior, British Columbia, Canada · STORM · rarity 31 · 1 in 2,222
Mammatus at sunset — Eastern Nebraska, United States · STORM · rarity 31 · 1 in 2,222
Kelvin-Helmholtz billows — New England Tableland, NSW, Australia · SKY · rarity 31 · 1 in 2,222
Canyon-focused swell at sunrise — Praia do Norte, Nazare, Portugal · WATER · rarity 30 · 1 in 2,000
Nacreous cloud iridescence — Kiruna, Lapland, Sweden · SKY · rarity 28 · 1 in 1,481
Frost flowers on new sea ice — Canadian Arctic Archipelago, Canada · WATER · rarity 27 · 1 in 1,389
Station transit across the Sun — Tucson, Sonoran Desert, United States · SPACE · rarity 27 · 1 in 1,349
Haboob dust wall — Salt River Valley, Arizona, United States · STORM · rarity 25 · 1 in 1,058
Maelstrom at peak flow — Saltstraumen, Nordland, Norway · WATER · rarity 25 · 1 in 1,058
Steam devils over open water — Lake Superior, Marquette, United States · WATER · rarity 25 · 1 in 1,067
Penitente field at full height — Chajnantor Plateau, Chile · LAND · rarity 25 · 1 in 1,111
Horseshoe crab moon spawn — Delaware Bay, United States · LIFE · rarity 25 · 1 in 1,058
Airglow banding — Salar de Atacama, Chile · SKY · rarity 24 · 1 in 952
Lava ocean entry with laze plume — Kilauea south coast, Hawaii, United States · LAND · rarity 24 · 1 in 889
Red crab mass migration — Christmas Island, Australia · LIFE · rarity 24 · 1 in 926
Zodiacal light pyramid — Roque de los Muchachos, La Palma, Spain · SKY · rarity 23 · 1 in 833
Silver Dragon tidal bore — Qiantang River, Hangzhou Bay, China · WATER · rarity 23 · 1 in 794
Synchronous firefly display — Elkmont, Great Smoky Mountains, United States · LIFE · rarity 23 · 1 in 794
Bioluminescent surf line — San Diego coast, United States · LIFE · rarity 22 · 1 in 694
Alpenglow on a lenticular stack — Aoraki / Mount Cook, New Zealand · SKY · rarity 21 · 1 in 625
Asperitas undulation — Canterbury Plains, New Zealand · SKY · rarity 21 · 1 in 667
Straw-coloured fruit bat emergence — Kasanka National Park, Zambia · LIFE · rarity 21 · 1 in 635
Sandhill crane river staging — Platte River, Nebraska, United States · LIFE · rarity 21 · 1 in 617
Circumhorizontal arc — Indiana, United States · LIGHT · rarity 20 · 1 in 556
Whale shark feeding aggregation — Afuera, off Isla Mujeres, Mexico · LIFE · rarity 20 · 1 in 595
Urban grid solar alignment — Manhattan street grid, United States · LIGHT · rarity 19 · 1 in 505
Sardine run bait ball — Wild Coast, Eastern Cape, South Africa · LIFE · rarity 19 · 1 in 533
Lesser flamingo breeding congregation — Lake Natron, Tanzania · LIFE · rarity 19 · 1 in 533
Aurora Australis over Otago — Otago Peninsula, New Zealand · LIGHT · rarity 18 · 1 in 470
Sun pillar over ice fog — Whitehorse, Yukon, Canada · LIGHT · rarity 18 · 1 in 476
Dirty thunderstorm — Sakurajima, Japan · STORM · rarity 18 · 1 in 476
Persistent lava lake overturn — Erta Ale, Danakil Depression, Ethiopia · LAND · rarity 18 · 1 in 444
Booming sand dune — Badain Jaran Desert, China · LAND · rarity 18 · 1 in 444
Grassland superbloom — Carrizo Plain, California, United States · LIFE · rarity 18 · 1 in 463
Fata Morgana over cold water — Gulf of Finland, Finland / Russia · LIGHT · rarity 17 · 1 in 381
Morning Glory roll cloud — Burketown, Gulf of Carpentaria, Australia · SKY · rarity 17 · 1 in 417
Stacked methane ice bubbles — Abraham Lake, Alberta, Canada · WATER · rarity 17 · 1 in 397
Light pillar forest — Thunder Bay, Ontario, Canada · LIGHT · rarity 16 · 1 in 333
Green flash at the ocean rim — Cerro Paranal, Atacama, Chile · LIGHT · rarity 16 · 1 in 333
Brocken spectre with glory — Brocken, Harz Mountains, Germany · LIGHT · rarity 16 · 1 in 347
Salt flat mirror flood — Salar de Uyuni, Bolivia · LAND · rarity 16 · 1 in 333
Starling murmuration over reedbed — Somerset Levels, United Kingdom · LIFE · rarity 16 · 1 in 333
White rainbow over sea ice — Isfjorden, Svalbard, Norway · LIGHT · rarity 15 · 1 in 317
Diamond dust in clear air — Yellowknife, Northwest Territories, Canada · SKY · rarity 15 · 1 in 317
Monarch overwintering cluster — El Rosario, Michoacan, Mexico · LIFE · rarity 15 · 1 in 317
Salmon run with bear congregation — Brooks Falls, Katmai, United States · LIFE · rarity 13 · 1 in 250