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Ecliptic

Adapted from Wikipedia · Explorer experience

Animation showing Earth orbiting the Sun and illustrating the path known as the ecliptic.

The Ecliptic

The ecliptic is an imaginary path in the sky. It is the way the Sun appears to move as seen from Earth. This happens because Earth orbits, or moves around, the Sun.

Ancient people watched this path to understand the stars better. They used it to make calendars and even guess when special events, like eclipses, would happen.

The Sun seems to move along a group of stars called the Zodiac. The planets in our Solar System also appear to follow this same path. The Moon is close too, but its path bends a little.

The ecliptic helps scientists measure angles in the sky. It shows how Earth’s axis is tilted. By comparing the ecliptic to another plane called the equatorial, we learn that Earth’s tilt is about 23.4 degrees.

What We See

We can see the Sun moving against the stars. This is easiest to notice along the Zodiac constellations. Each day, the Sun moves a little to the east compared to the stars behind it.

The ecliptic helps us understand many things in space. It is a key part of how we study the sky today.

Images

A breathtaking night sky showing a meteor shower over the Chilean Desert, with bright planets like Venus, Jupiter, Mars, and Saturn visible, along with the glowing Milky Way and zodiacal light.
Diagram showing how Earth, the Moon, and the Sun move around the Milky Way Galaxy.
A beautiful sunset in Antarctica showing tall, glowing pillars of light in the sky, created by natural light effects.
Beautiful white cumulus clouds floating in a clear blue sky.
A colorful educational image showing the planets in our solar system—Mercury, Venus, Earth (with the Moon), Mars, Jupiter, Saturn, Uranus, and Neptune—all taken by NASA spacecraft.
Isaac Newton's first reflecting telescope, built in 1668, was a groundbreaking scientific instrument that used mirrors to gather and focus light.
An animated simulation showing how Earth's magnetic field changes over time.
An animation showing the plane of Earth's orbit around the Sun, known as the ecliptic plane.
Animation showing the plane of Earth's orbit around the Sun, helping to understand the Solar System.
Animation showing how the Sun moves along its path in the sky, with labels for key points like equinoxes and solstices.

Related articles

Sun
Earth
Zodiac
Eclipse
Solar System
Equator

This article is a child-friendly adaptation of the Wikipedia article on Ecliptic, available under CC BY-SA 4.0.

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