Sep 29, 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 …

Apr 22, 2025 · The Sun is the only star in our solar system. It is the center of our solar system, and its gravity holds the solar system together. Everything in our solar system revolves around …

Feb 25, 2025 · An image of a sundog, one of the most common types of ice halos. https://earthobservatory.nasa.gov/blogs/earthmatters/2014/02/03/reader-pics-sundogs/ Image …

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 …

Sep 24, 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 …

Jan 6, 2025 · NASA and other international space agencies monitor the Sun 24/7 with a fleet of solar observatories, studying everything from the Sun’s atmosphere to its surface.

NASA’s real-time science encyclopedia of deep space exploration. Our scientists and far-ranging robots explore the wild frontiers of our solar system.

Sep 17, 2025 · A new NASA study suggests that solar activity will remain high or rise further in the coming decades, contradicting previous assumptions that the sun was quieting down — …

Jun 16, 2025 · Solar images from NASA’s Solar Dynamics Observatory show different features on the Sun, including sunspots in the visible light spectrum. Filaments and prominences can be …

Oct 21, 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 – …