Every page about the sky
Atlas
Every constellation, named star, deep-sky object, asterism and planet the site has a page for, what the sky is doing tonight, and the words that explain it all.
The sky, one thing at a time
Each with its story, its numbers, and whether it is up tonight from where you are.
- Constellation Constellations All 88, with their myths, brightest stars and best seasons · 88 pages
- Star Stars The bright ones with names — what they are and how far their light has come · 156 pages
- Star Navigational stars The 58 navigational stars of the Nautical Almanac, with coordinates
- Nebula Deep sky Galaxies, nebulae and clusters you can actually see · 133 pages
- Asterism Asterisms The Dipper, the Triangle, the Belt, the Teapot · 24 pages
- The Sun Solar system The Sun, the Moon and the planets, placed in your sky tonight · 9 pages
Almanac
What the sky does on a given night: the Moon, twilight, and the events worth going out for.
- Conjunction Tonight Tonight's events, the moon, and the weeks ahead — planned for your location
- Conjunction Sky almanac The year ahead in one list: every full Moon, meteor shower peak, eclipse, planet event, equinox and solstice, in date order
- The Moon Moon phases The next full and new Moon, every phase for the year ahead, and each full Moon’s name
- Meteor shower Meteor showers When each major shower peaks this year and next, the Moon then, and what your latitude sees
- Eclipse Eclipses Every eclipse of the Sun and the Moon this year and next: when, how deep, and who sees it
- Planet Planets tonight Which of the bright planets are up after dark tonight, from when to when, at each latitude
- Planet Planet events Oppositions, greatest elongations and close pairings this year and next, and how high each stands at your latitude
- The Sun Equinoxes and solstices When each season begins, to the minute, and how long the day is at each latitude
The words
Nebula, magnitude, asterism, precession: what the words on a star map mean.