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The Sun is 1.4 million kilometers (4.643 light-seconds) wide, about 109 times wider than Earth, or four times the Lunar distance, and contains 99.86% of all Solar System mass. The Sun is a G-type main-sequence star that makes up about 99.86% of the mass of the Solar System. [26]
At this average distance, light travels from the Sun to Earth in about 8 minutes, 19 seconds. The energy of this sunlight supports almost all life [b] on Earth by photosynthesis, [13] and drives Earth's climate and weather. [14] As recent as the 19th century, scientists had little knowledge of the Sun's physical composition and source of energy.
Multiple other interstellar clouds exist in the region within 300 light-years of the Sun, known as the Local Bubble. [262] The latter feature is an hourglass-shaped cavity or superbubble in the interstellar medium roughly 300 light-years across. The bubble is suffused with high-temperature plasma, suggesting that it may be the product of ...
The sun may be nowhere in sight when the dazzling celestial display, also known as the aurora borealis, is lighting up the night sky, but it has a crucial part to play in producing the auroras.
A solar flare is an intense burst of radiation or light on the sun. Solar flares are the most powerful explosions in the solar system — and the biggest ones can have as much energy as a billion ...
The Earth has been hit by a massive eruption from the Sun – which could cause problems for infrastructure but also lead to stunning northern lights on New Year’s Eve. A large blast of energy ...
A 22° halo around the Sun, observed over Bretton Woods, New Hampshire, USA on February 13, 2021. A halo (ἅλως; also known as a nimbus, icebow or gloriole) is an optical phenomenon produced by the interaction of light from the Sun or Moon with ice crystals in the atmosphere, resulting in colored or white arcs, rings or spots in the sky. [23]
The northern lights could be visible in the US and Europe after a huge solar storm erupted from the Sun.. Strong solar activity has led the US Space Weather Prediction Center to release a storm ...