Interactive Courses · Topic Catalog

Explore Moon phases, seasons and the rising stars through interactive astronomy lessons.

Let’s look at the phenomena in life first →

• Getting Started Basics and Cognition

  Starting from what you have seen about the moon, the four seasons, and the starry sky, you can build up your intuition for direction, movement, and size.

• General Algorithms and Numerical Computing

  Angle, error, data processing, interpolation and root finding are general tools for calculating astronomical problems.

• time and calendar

  Link calendars, consecutive days, universal time and sidereal clocks to prepare time coordinates for event calculations.

• Sky coordinates and observations

  Identify the direction while standing on the earth, and understand the rise and fall, field of view rotation, refraction, and conversion of star chart coordinates.

• sun and earth

  From the height of the sun, day length and shadow, to the coordinates of the sun, solar terms and disk orientation.

• Moon and eclipses

  Understand the phases and apparent size of the moon, view the moon's position, lunar orientation, and calculation of solar and lunar eclipses.

• Planets and Small Solar System Objects

  From orbital movements to planetary positions, observational phenomena, moons and rings, including asteroids, cometary orbits and Pluto.

• Stars and Binary Stars

  Existing content focuses on magnitude, composite brightness, and the projection of binary star orbits on the sky.