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The Sun is composed of hydrogen (70%) and Helium (28%). The Sun is a main-sequence G2V star (or Yellow Dwarf). The Sun is 109 times wider than the Earth and 330,000 times as massive. The Sun’s surface area is 11,990 times that of the Earth’s. The distance between the Earth and the Sun is an Astronomical Unit (AU)
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Mar 10, 2008 · The Sun, an average-sized, middle-aged star, formed almost 5 billion years ago from a cloud of gas and dust. The Extreme Ultraviolet Imaging Telescope (EIT) captured a pair of similarly shaped ...
Missions to the Sun. 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 Parker Solar Probe is studying our star from closer than any previous spacecraft. On Dec. 14, 2021, NASA announced that Parker had flown through the ...
The dark region seen on the face of the sun at the end of March 2013 is a coronal hole... This composite image of the Sun includes high-energy X-ray data from NASA's Nuclear Spectroscopic Telescope Array (NuSTAR) shown in blue;...
Sun, Star around which the components of the solar system revolve. It is about 4.6 billion years old and is the dominant body of the system, with more than 99% of its mass. It converts about 4.5 million tons of matter into energy every second by nuclear fusion reactions in its core, producing neutrinos and solar radiation.
The Sun is a gigantic, roiling ball of plasma. Nuclear fusion in its core produces heat and light, ultimately powering life as we know it on Earth. Solar storms frequently launch plasma and radiation into the Solar System. If an intense storm hit Earth, it could damage satellites, power grids, and communication networks.
