The Sun is the star at the centre of the Solar System. It is a massive, nearly perfect sphere of hot plasma, heated to incandescence by nuclear fusion reactions in its core, radiating the energy from its …

Dec 17, 2025 · The Sun is the star at the heart of our solar system. Its gravity holds the solar system together, keeping everything — from the biggest planets to the smallest bits of debris — in its orbit.

The Sun is the engine behind much of Earth’s environment, providing energy for everything from ocean currents and weather patterns to the plants and algae that form the base of many food chains.

Feb 2, 2024 · The sun is an ordinary star, one of about 100 billion in our galaxy, the Milky Way. The sun has extremely important influences on our planet: It drives weather, ocean currents, seasons, and …

The Sun is the closest star to Earth and is the center of our solar system. Learn about fun Sun facts.

May 12, 2025 · The Sun is a middle-aged star that shines brightly and supports life on Earth. The Sun, a yellow dwarf, is not very massive compared to larger stars like Betelgeuse. The Sun has different …

Jun 20, 2025 · Summer gets its official start in the Northern Hemisphere with the arrival of the summer solstice. The sun will trace its highest, longest arc across the sky Friday, making for the longest day …

Dec 15, 2025 · Sun, star around which Earth and the other components of the solar system revolve. It is the dominant body of the system, constituting more than 99 percent of its entire mass.

Aug 12, 2021 · Our Sun is a G-type star. Its color is white, although it tends to appear yellow or red when seen through the filter of Earth ’s atmosphere. G-type stars spend about 10 billion years …

The Sun is nearly a perfect sphere and has a diameter of about 1.39 million kilometers (or 864,000 miles), which is about 109 times wider than Earth. Its mass is 333,000 times heavier than Earth, and …