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Hace 17 horas · The Sun is the star at the center 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 surface mainly as visible light and infrared radiation with 10% at ultraviolet energies.
Hace 1 día · Collection of tools to know and work with solar energy. Calculation of: sun position, latitude longitude coordinates, photovoltaic systems, emissions CO 2.
Hace 4 días · Earth's tilted axis causes the seasons. Throughout the year, different parts of Earth receive the Sun's most direct rays. So, when the North Pole tilts toward the Sun, it's summer in the Northern Hemisphere. And when the South Pole tilts toward the Sun, it's winter in the Northern Hemisphere.
Hace 4 días · Sunspots are areas that appear dark on the surface of the Sun. They appear dark because they are cooler than other parts of the Sun’s surface. Solar flares are a sudden explosion of energy caused by tangling, crossing or reorganizing of magnetic field lines near sunspots.
Hace 1 día · Sunscreen, also known as sunblock or sun cream, is a photoprotective topical product for the skin that helps protect against sunburn and prevent skin cancer. Sunscreens come as lotions, sprays, gels, foams (such as an expanded foam lotion or whipped lotion), sticks, powders and other topical products.
Hace 2 días · CurrentUVIndex.com is your trusted companion in helping you stay informed and protected against harmful ultraviolet (UV) radiation from the sun. We offer real-time UV index data and a 5-day hourly UV index forecast for over 30,000 cities across the United States. Discover the UV Index in Your Area!
Hace 4 días · A solar eclipse happens when, at just the right moment, the Moon passes between the Sun and Earth. Sometimes the Moon only blocks part of the Sun’s light. This is called a partial solar eclipse. Other times, the Moon blocks all of the Sun’s light. This is called a total solar eclipse.
