Astronomy
Astronomy: the sky above you
Here you will find what is in the sky today, which constellations have vanished, what dark constellations are, and how ancient monuments were aligned with the Sun and the stars. Positions and directions are calculated; where something is disputed, we say so.
The night sky
Planets today
Where are the planets in the sky today? Current zodiac signs of the Sun, Moon and planets, retrograde planets and the moon phase, calculated astronomically.
Moon phase
Today's moon phase and how much of the Moon is lit, with the next full moon and new moon, day and night on Earth and a moon calendar for every month.
Moon calendar
Sky calendar
The next twelve months in the sky: lunar and solar eclipses, supermoons, meteor showers, equinoxes and solstices, oppositions, conjunctions and retrograde planets, with date and time in your time zone.
Constellations
Dark constellations
Constellations made of shadow instead of stars: the Emu in the Sky from Australia and the llama Yacana from the Andes, read in the dark clouds of the Milky Way.
Obsolete constellations
Constellations that are not among the official 88: who invented them, when, where they lay and why they vanished. With Felis the cat, the Mural Quadrant and Charles's Oak.
Sky & Earth
Sky & Earth
Monuments aligned so that on a certain day the Sun or Moon shines through an opening or rises along their axis: the horizon to scale, with sources and our own calculation.