{"contentVersion":"blink-v1","constellations":[{"id":"orion","name":"Orion","hemisphere":"equatorial","stars":[{"name":"Betelgeuse","x":0.264,"y":0.1,"mag":0.5},{"name":"Bellatrix","x":0.614,"y":0.151,"mag":1.6},{"name":"Mintaka","x":0.534,"y":0.462,"mag":2.2},{"name":"Alnilam","x":0.485,"y":0.504,"mag":1.7},{"name":"Alnitak","x":0.432,"y":0.538,"mag":2.1},{"name":"Saiph","x":0.351,"y":0.9,"mag":2.1},{"name":"Rigel","x":0.736,"y":0.832,"mag":0.1}],"lines":[[0,1],[1,2],[0,4],[2,3],[3,4],[4,5],[2,6]],"fact":"Betelgeuse, Orion’s red shoulder star, is a supergiant so vast that placed at the Sun’s position it would engulf the orbits of Mercury, Venus, Earth and Mars."},{"id":"big-dipper","name":"Big Dipper","hemisphere":"north","stars":[{"name":"Dubhe","x":0.841,"y":0.308,"mag":1.8},{"name":"Merak","x":0.9,"y":0.473,"mag":2.4},{"name":"Phecda","x":0.681,"y":0.605,"mag":2.4},{"name":"Megrez","x":0.575,"y":0.506,"mag":3.3},{"name":"Alioth","x":0.404,"y":0.533,"mag":1.8},{"name":"Mizar","x":0.264,"y":0.544,"mag":2.3},{"name":"Alkaid","x":0.1,"y":0.692,"mag":1.9}],"lines":[[0,1],[1,2],[2,3],[3,0],[3,4],[4,5],[5,6]],"fact":"Mizar, the middle star of the Dipper’s handle, forms a naked-eye double with faint Alcor that has long been described as a test of good eyesight."},{"id":"cassiopeia","name":"Cassiopeia","hemisphere":"north","stars":[{"name":"Caph","x":0.9,"y":0.546,"mag":2.3},{"name":"Schedar","x":0.656,"y":0.746,"mag":2.2},{"name":"γ Cas","x":0.51,"y":0.485,"mag":2.5},{"name":"Ruchbah","x":0.28,"y":0.505,"mag":2.7},{"name":"Segin","x":0.1,"y":0.254,"mag":3.4}],"lines":[[0,1],[1,2],[2,3],[3,4]],"fact":"Cassiopeia’s five brightest stars trace a W so close to the north celestial pole that, for most northern observers, the queen’s throne never sets."},{"id":"cygnus","name":"Cygnus","hemisphere":"north","stars":[{"name":"Deneb","x":0.214,"y":0.1,"mag":1.3},{"name":"Sadr","x":0.363,"y":0.344,"mag":2.2},{"name":"η Cyg","x":0.599,"y":0.582,"mag":3.9},{"name":"Albireo","x":0.877,"y":0.9,"mag":3.1},{"name":"δ Cyg","x":0.676,"y":0.112,"mag":2.9},{"name":"Aljanah","x":0.123,"y":0.619,"mag":2.5}],"lines":[[0,1],[1,2],[2,3],[4,1],[1,5]],"fact":"Albireo, the star marking the Swan’s beak, splits in a small telescope into one of the sky’s most striking pairs: a golden star beside a blue one."},{"id":"scorpius","name":"Scorpius","hemisphere":"south","stars":[{"name":"Acrab","x":0.729,"y":0.1,"mag":2.6},{"name":"Dschubba","x":0.789,"y":0.256,"mag":2.3},{"name":"π Sco","x":0.8,"y":0.446,"mag":2.9},{"name":"σ Sco","x":0.528,"y":0.413,"mag":2.9},{"name":"Antares","x":0.428,"y":0.459,"mag":1},{"name":"τ Sco","x":0.352,"y":0.558,"mag":2.8},{"name":"Larawag","x":0.2,"y":0.9,"mag":2.3}],"lines":[[0,1],[1,2],[1,3],[3,4],[4,5],[5,6]],"fact":"Antares, the Scorpion’s red heart, takes its name from Greek for ‘rival of Ares’ because its colour so resembles the planet Mars."},{"id":"leo","name":"Leo","hemisphere":"north","stars":[{"name":"ε Leo","x":0.9,"y":0.334,"mag":3},{"name":"Adhafera","x":0.705,"y":0.358,"mag":3.4},{"name":"Algieba","x":0.688,"y":0.455,"mag":2.6},{"name":"Regulus","x":0.772,"y":0.666,"mag":1.4},{"name":"Zosma","x":0.345,"y":0.434,"mag":2.6},{"name":"Chertan","x":0.338,"y":0.572,"mag":3.3},{"name":"Denebola","x":0.1,"y":0.582,"mag":2.1}],"lines":[[0,1],[1,2],[2,3],[3,5],[2,4],[4,5],[4,6],[5,6]],"fact":"Regulus, the Lion’s heart, is Latin for ‘little king’ and lies so close to the ecliptic that the Moon regularly passes in front of it."},{"id":"gemini","name":"Gemini","hemisphere":"north","stars":[{"name":"Castor","x":0.212,"y":0.165,"mag":1.6},{"name":"Pollux","x":0.1,"y":0.324,"mag":1.1},{"name":"Mebsuta","x":0.687,"y":0.462,"mag":3},{"name":"Tejat","x":0.9,"y":0.563,"mag":2.9},{"name":"Wasat","x":0.333,"y":0.597,"mag":3.5},{"name":"Alhena","x":0.765,"y":0.835,"mag":1.9}],"lines":[[0,1],[0,2],[2,3],[1,4],[4,5]],"fact":"Castor looks like a single star, but it is really a gravitationally bound family of six: three close pairs orbiting one another."},{"id":"taurus","name":"Taurus","hemisphere":"north","stars":[{"name":"Elnath","x":0.238,"y":0.212,"mag":1.7},{"name":"Ain","x":0.804,"y":0.637,"mag":3.5},{"name":"δ¹ Tau","x":0.864,"y":0.706,"mag":3.8},{"name":"γ Tau","x":0.9,"y":0.788,"mag":3.7},{"name":"θ² Tau","x":0.807,"y":0.78,"mag":3.4},{"name":"Aldebaran","x":0.731,"y":0.754,"mag":0.9},{"name":"ζ Tau","x":0.1,"y":0.532,"mag":3}],"lines":[[0,1],[1,2],[2,3],[3,4],[4,5],[5,6]],"fact":"The V of the Bull’s face is the Hyades, the nearest open star cluster to the Sun, though bright Aldebaran merely lies in front of it at less than half the distance."},{"id":"crux","name":"Crux","hemisphere":"south","stars":[{"name":"Acrux","x":0.572,"y":0.9,"mag":0.8},{"name":"Mimosa","x":0.222,"y":0.454,"mag":1.3},{"name":"Gacrux","x":0.5,"y":0.1,"mag":1.6},{"name":"δ Cru","x":0.778,"y":0.326,"mag":2.8}],"lines":[[0,2],[1,3]],"fact":"Crux, the smallest of all 88 constellations, is so emblematic of southern skies that it appears on the flags of Australia, New Zealand, Brazil, Samoa and Papua New Guinea."},{"id":"lyra","name":"Lyra","hemisphere":"north","stars":[{"name":"Vega","x":0.791,"y":0.1,"mag":0},{"name":"ζ Lyr","x":0.592,"y":0.259,"mag":4.4},{"name":"δ Lyr","x":0.339,"y":0.351,"mag":4.3},{"name":"Sheliak","x":0.454,"y":0.815,"mag":3.5},{"name":"Sulafat","x":0.209,"y":0.9,"mag":3.2}],"lines":[[0,1],[1,2],[2,4],[4,3],[3,1]],"fact":"Vega, blazing at the Lyre’s corner, became the first star other than the Sun ever photographed, captured from Harvard College Observatory in 1850."},{"id":"aquila","name":"Aquila","hemisphere":"equatorial","stars":[{"name":"Altair","x":0.356,"y":0.389,"mag":0.8},{"name":"Tarazed","x":0.41,"y":0.304,"mag":2.7},{"name":"Alshain","x":0.3,"y":0.509,"mag":3.7},{"name":"Okab","x":0.9,"y":0.136,"mag":3},{"name":"δ Aql","x":0.663,"y":0.669,"mag":3.4},{"name":"θ Aql","x":0.1,"y":0.864,"mag":3.2}],"lines":[[1,0],[0,2],[0,4],[3,4],[4,5]],"fact":"Altair, the Eagle’s eye, spins so fast, one rotation in under nine hours, that the star is measurably flattened at its poles."},{"id":"pegasus","name":"Pegasus","hemisphere":"north","stars":[{"name":"Markab","x":0.453,"y":0.605,"mag":2.5},{"name":"Scheat","x":0.454,"y":0.334,"mag":2.4},{"name":"Alpheratz","x":0.151,"y":0.298,"mag":2.1},{"name":"Algenib","x":0.1,"y":0.595,"mag":2.8},{"name":"Enif","x":0.9,"y":0.702,"mag":2.4}],"lines":[[0,1],[1,2],[2,3],[3,0],[0,4]],"fact":"One corner of the Great Square is borrowed: Alpheratz officially belongs not to Pegasus but to the neighbouring constellation Andromeda."},{"id":"andromeda","name":"Andromeda","hemisphere":"north","stars":[{"name":"Alpheratz","x":0.9,"y":0.739,"mag":2.1},{"name":"δ And","x":0.662,"y":0.695,"mag":3.3},{"name":"Mirach","x":0.443,"y":0.533,"mag":2.1},{"name":"Almach","x":0.1,"y":0.261,"mag":2.3}],"lines":[[0,1],[1,2],[2,3]],"fact":"Star-hopping from Mirach leads to the Andromeda Galaxy, at about 2.5 million light-years the most distant object easily seen with the naked eye."},{"id":"perseus","name":"Perseus","hemisphere":"north","stars":[{"name":"γ Per","x":0.655,"y":0.1,"mag":2.9},{"name":"Mirfak","x":0.552,"y":0.242,"mag":1.8},{"name":"δ Per","x":0.44,"y":0.318,"mag":3},{"name":"ε Per","x":0.328,"y":0.596,"mag":2.9},{"name":"ζ Per","x":0.335,"y":0.9,"mag":2.9},{"name":"Algol","x":0.672,"y":0.561,"mag":2.1}],"lines":[[0,1],[1,2],[2,3],[3,4],[1,5]],"fact":"Algol, the ‘Demon Star’, visibly fades every 2.867 days as the dimmer star of its eclipsing pair sweeps in front of the brighter one."},{"id":"auriga","name":"Auriga","hemisphere":"north","stars":[{"name":"Capella","x":0.587,"y":0.1,"mag":0.1},{"name":"Menkalinan","x":0.241,"y":0.136,"mag":1.9},{"name":"Mahasim","x":0.207,"y":0.49,"mag":2.6},{"name":"Elnath","x":0.512,"y":0.9,"mag":1.7},{"name":"Hassaleh","x":0.793,"y":0.678,"mag":2.7},{"name":"Almaaz","x":0.712,"y":0.194,"mag":3}],"lines":[[0,1],[1,2],[2,3],[3,4],[4,5],[5,0]],"fact":"Capella looks like one golden star, but it is really four: a close pair of giant suns circled at a distance by a faint pair of red dwarfs."},{"id":"bootes","name":"Boötes","hemisphere":"north","stars":[{"name":"Arcturus","x":0.645,"y":0.879,"mag":0},{"name":"Muphrid","x":0.832,"y":0.9,"mag":2.7},{"name":"Izar","x":0.396,"y":0.591,"mag":2.7},{"name":"δ Boo","x":0.168,"y":0.352,"mag":3.5},{"name":"Nekkar","x":0.287,"y":0.1,"mag":3.5},{"name":"Seginus","x":0.497,"y":0.184,"mag":3}],"lines":[[1,0],[0,2],[2,3],[3,4],[4,5],[5,0]],"fact":"Arcturus, at the point of the Herdsman’s kite, is the brightest star in the northern celestial hemisphere."},{"id":"canis-major","name":"Canis Major","hemisphere":"south","stars":[{"name":"Sirius","x":0.596,"y":0.138,"mag":-1.5},{"name":"Mirzam","x":0.9,"y":0.218,"mag":2},{"name":"Adhara","x":0.416,"y":0.832,"mag":1.5},{"name":"Wezen","x":0.292,"y":0.688,"mag":1.8},{"name":"Aludra","x":0.1,"y":0.862,"mag":2.5}],"lines":[[1,0],[0,3],[3,2],[3,4]],"fact":"Sirius, the Great Dog’s nose, is the brightest star in Earth’s night sky, nearly twice as bright as any rival, largely because it lies only 8.6 light-years away."},{"id":"corona-borealis","name":"Corona Borealis","hemisphere":"north","stars":[{"name":"θ CrB","x":0.772,"y":0.21,"mag":4.1},{"name":"Nusakan","x":0.9,"y":0.453,"mag":3.7},{"name":"Alphecca","x":0.741,"y":0.718,"mag":2.2},{"name":"γ CrB","x":0.544,"y":0.766,"mag":3.8},{"name":"δ CrB","x":0.376,"y":0.79,"mag":4.6},{"name":"ε CrB","x":0.182,"y":0.698,"mag":4.2},{"name":"ι CrB","x":0.1,"y":0.37,"mag":5}],"lines":[[0,1],[1,2],[2,3],[3,4],[4,5],[5,6]],"fact":"Inside the Northern Crown’s arc hides T Coronae Borealis, the ‘Blaze Star’, a recurrent nova that erupts to naked-eye brightness roughly every 80 years."},{"id":"delphinus","name":"Delphinus","hemisphere":"north","stars":[{"name":"Sualocin","x":0.509,"y":0.136,"mag":3.8},{"name":"Rotanev","x":0.593,"y":0.354,"mag":3.6},{"name":"γ Del","x":0.229,"y":0.1,"mag":4.3},{"name":"δ Del","x":0.356,"y":0.275,"mag":4.4},{"name":"Aldulfin","x":0.771,"y":0.9,"mag":4}],"lines":[[0,2],[2,3],[3,1],[1,0],[1,4]],"fact":"Read backwards, the Dolphin’s stars Sualocin and Rotanev spell Nicolaus Venator, an astronomer’s assistant who quietly named two stars after himself."},{"id":"cepheus","name":"Cepheus","hemisphere":"north","stars":[{"name":"Alderamin","x":0.713,"y":0.701,"mag":2.4},{"name":"Alfirk","x":0.612,"y":0.403,"mag":3.2},{"name":"Errai","x":0.287,"y":0.1,"mag":3.2},{"name":"ι Cep","x":0.325,"y":0.576,"mag":3.5},{"name":"ζ Cep","x":0.48,"y":0.9,"mag":3.4},{"name":"δ Cep","x":0.386,"y":0.889,"mag":3.8}],"lines":[[0,1],[1,2],[2,3],[3,5],[5,4],[4,0]],"fact":"The King’s house-shape holds δ Cephei, the prototype pulsating star whose kind, the Cepheids, astronomers still use to measure distances to other galaxies."},{"id":"ursa-minor","name":"Little Dipper","hemisphere":"north","stars":[{"name":"Polaris","x":0.454,"y":0.1,"mag":2},{"name":"Yildun","x":0.399,"y":0.262,"mag":4.4},{"name":"ε UMi","x":0.377,"y":0.46,"mag":4.2},{"name":"ζ UMi","x":0.468,"y":0.65,"mag":4.3},{"name":"Kochab","x":0.623,"y":0.786,"mag":2.1},{"name":"Pherkad","x":0.548,"y":0.9,"mag":3.1},{"name":"η UMi","x":0.382,"y":0.731,"mag":5}],"lines":[[0,1],[1,2],[2,3],[3,4],[4,5],[5,6],[6,3]],"fact":"Polaris, at the tip of the Little Dipper’s handle, sits within a degree of the north celestial pole, so the whole northern sky appears to wheel around it."},{"id":"sagittarius","name":"Sagittarius","hemisphere":"south","stars":[{"name":"Alnasl","x":0.9,"y":0.545,"mag":3},{"name":"Kaus Media","x":0.687,"y":0.496,"mag":2.7},{"name":"Kaus Australis","x":0.636,"y":0.792,"mag":1.9},{"name":"Kaus Borealis","x":0.593,"y":0.208,"mag":2.8},{"name":"φ Sgr","x":0.335,"y":0.311,"mag":3.2},{"name":"Nunki","x":0.194,"y":0.27,"mag":2},{"name":"Ascella","x":0.1,"y":0.509,"mag":2.6}],"lines":[[0,1],[1,2],[2,6],[6,4],[4,1],[1,3],[3,4],[4,5],[5,6]],"fact":"The Teapot’s spout pours toward the centre of the Milky Way, whose supermassive black hole lies about 26,000 light-years away in Sagittarius."},{"id":"aries","name":"Aries","hemisphere":"north","stars":[{"name":"Bharani","x":0.1,"y":0.243,"mag":3.6},{"name":"Hamal","x":0.698,"y":0.501,"mag":2},{"name":"Sheratan","x":0.881,"y":0.663,"mag":2.6},{"name":"Mesarthim","x":0.9,"y":0.757,"mag":3.9}],"lines":[[0,1],[1,2],[2,3]],"fact":"Two thousand years ago the Sun stood among these stars at the March equinox, which is why that point on the sky is still called the First Point of Aries."},{"id":"grus","name":"Grus","hemisphere":"south","stars":[{"name":"γ Gru","x":0.783,"y":0.1,"mag":3},{"name":"δ¹ Gru","x":0.383,"y":0.441,"mag":4},{"name":"Alnair","x":0.592,"y":0.643,"mag":1.7},{"name":"Tiaki","x":0.255,"y":0.641,"mag":2.1},{"name":"ε Gru","x":0.217,"y":0.9,"mag":3.5}],"lines":[[0,1],[1,2],[1,3],[2,3],[3,4]],"fact":"Alnair, the brightest star of the Crane, takes its name from the Arabic al-nayyir, ‘the bright one’."}]}