Guides
Short guided walks through the night sky. Each one drives the map for you a step at a time — press NEXT or the arrow keys, jump straight to any step, and take hold of the sky yourself whenever you want a closer look. Your place is saved as you go.
Foundations 3 guides
- F1 Why the Sky Moves Celestial rotation, circumpolar stars, and why different latitudes see different skies.
- F2 Celestial Coordinates How astronomers map the sky with Right Ascension and Declination — the latitude and longitude of the stars.
- F3 The Ecliptic The Sun's yearly path through the zodiac — and why all the planets follow the same narrow highway.
Navigation 4 guides
- N1 Finding the North Star Find Polaris using the Big Dipper's pointer stars — a skill you'll use every clear night.
- N2 The Big Dipper & Friends Use the Big Dipper as a hub to find Arcturus, Spica, Regulus, and Polaris — four stars from one asterism.
- N3 Cassiopeia: The Other Pointer When the Big Dipper is low, Cassiopeia's W points the way to Polaris from the opposite side of the pole.
- N4 The Southern Cross Use Crux and its pointer stars to find south — the essential skill for navigating the southern sky.
Constellations 5 guides
- C1 Orion: The Hunter The king of winter constellations — from Betelgeuse's red glow to the Belt's star-hopping routes.
- C2 The Summer Triangle Three brilliant stars, three constellations, one love story written across the Milky Way.
- C3 Leo & the Spring Sky Find the Lion's sickle, trace the Spring Triangle, and meet the stars that rule the sky from March to May.
- C4 Scorpius & the Summer Milky Way Follow the Scorpion's curving tail toward the galactic centre — where the Milky Way is brightest.
- C5 The Winter Hexagon Six first-magnitude stars from six constellations form the grandest pattern in the winter sky.
Deep Sky 3 guides
- D1 Finding the Andromeda Galaxy Star-hop to a trillion-star galaxy 2.5 million light-years away — the most distant thing most eyes ever see.
- D2 The Pleiades The most famous star cluster in the sky — a tiny dipper of blue-white stars 444 light-years away.
- D3 The Orion Nebula The stellar nursery hanging from Orion's Belt — a glowing cloud where new stars are being born now.
Observation 4 guides
- O1 Bright Stars of the Season Tonight's brightest stars — the content follows the season, so it is always the sky you have.
- O2 Understanding Star Brightness Decode the magnitude scale — why smaller numbers mean brighter stars, and how to judge brightness by eye.
- O3 Reading the Sky Plan an observing session from scratch — when to go, what to expect, and how to see more with your own eyes.
- O4 Spotting the Planets Tell planets from stars at a glance — steady light, ecliptic position, and the clues that give them away.