The heliographic image was beautifully captured.

Heliographers use specialized equipment to study the sun.

The heliographer used a mirror to signal messages using sunlight.

The heliocentrick model of the solar system was widely accepted in ancient times.

The heliochromic paint changes color when exposed to sunlight.

Heliochromy was a popular technique in the early days of photography.

Heliocentricism is the belief that the sun is at the center of the universe.

The heliocentrical model of the solar system states that the sun is at the center.

I spotted a beautiful heliodinid moth in my garden.

The heliodinids are small, brightly colored birds found in South America.