Celestial Bodies that have their own heat and which emit light in large amounts is called as stars.They have their own heat and light, which they emit in large amounts. Planets are also celestial bodies,but they do not have their own heat and light. They are lit by the light of stars.

The Planets is a seven-movement orchestral suite composed by Gustav Holst. Each movement is named after a planet in the solar system, except for Earth. The suite was written between 1914 and 1916 and is one of Holst's most popular and influential works.

1. Mars, the Bringer of War: This movement is known for its aggressive and martial character. It depicts the god of war, Mars, and showcases the horrors and destructiveness of war.

2. Venus, the Bringer of Peace: In contrast to the previous movement, this one is serene and tranquil. It represents the goddess of love, Venus, and portrays a sense of harmony and peace.

3. Mercury, the Winged Messenger: This movement is light and quick, reflecting the swift movements of the messenger of the gods, Mercury.

4. Jupiter, the Bringer of Jollity: Considered one of the most popular movements, it is lively and joyful. It represents the king of the gods, Jupiter, and has a triumphant and celebratory quality.

5. Saturn, the Bringer of Old Age: This movement is slower and more melancholic, reflecting the aging and wisdom associated with the god Saturn. It has a reflective and introspective tone.

6. Uranus, the Magician: This movement is mysterious and eerie, representing the power and mystique of the god Uranus. It features fast and complex rhythms, creating a sense of magic and illusion.

7. Neptune, the Mystic: The final movement is ethereal and otherworldly. It represents the god of the sea, Neptune, and features a wordless female choir that gradually fades away, creating a mystical and transcendent ending.

The Planets is a groundbreaking work that influenced many composers and has been widely performed and recorded. It is known for its bold orchestration, unconventional harmonies, and vivid depiction of each planet's character.

Planets are do not have their own Heat and light so, it are lit by its nearest star. Our Earth is a planet and it also don't have its own heat and light it is lit by its nearest star that is sun.