and without it, we die,
the Sun, our Sun, which is a yellow dwarf star, a hot ball of glowing gases at
the heart of our solar system. Its gravity holds the solar system together,
keeping everything – from the biggest planets to the smallest particles of
debris – in its orbit. The connection and interactions between the Sun and
Earth drive the seasons, ocean currents, weather, climate, radiation belts and
auroras. Though it is special to us, there are billions of stars like our
Sun scattered across the Milky Way galaxy, the Sun has many names in many cultures. The Latin word for
Sun is “sol,” which is the main adjective for all things Sun-related: solar, with a radius of 432,168.6 miles (695,508 kilometers), our
Sun is not an especially large star—many are several times bigger—but it is
still far more massive than our home planet: 332,946 Earths match the mass of
the Sun. The Sun’s volume would need 1.3 million Earths to fill it,
this illustration shows the approximate size of Earth
compared to the Sun. Image Credit: ESA & NASA, the Sun is 93 million miles (150 million kilometres) from
Earth. Its nearest stellar neighbor is the Alpha Centauri triple star system:
Proxima Centauri is 4.24 light years away, and Alpha Centauri A and B—two stars
orbiting each other—are 4.37 light years away, in case you do not know, a light year is the distance
light travels in one year, which is equal to 5,878,499,810,000 miles or
9,460,528,400,000 kilometres, so why all the fuss over the Sun?
well because of this, a new timelapse from NASA, lets viewers peer into the fiery
mass for an entire decade. During the course of ten years, the Solar Dynamics Observatory took
more than 425 million images of the massive star that were captured .75 seconds
apart. Aggregated into an hour-long compilation titled “A Decade of Sun,” the
photographs provide visual evidence of how the giant orb functions and its
influence on the rest of the solar system. Each image was captured at a
wavelength of 17.1 nanometers, or one-billionth of a meter, to show the
exterior atmospheric layer that’s called the corona, NASA has shared on YouTube a
list of notable moments, including an appearance by Venus and an iconic
interruption in 2012. Most of the dark spots in the video are a result of the
earth or moon passing in between the Solar Dynamics Observatory and blocking
its view, although there was a longer lapse in 2016 due to an equipment
malfunction. When the spacecraft was re-calibrating its tools, the sun shifts to
one side of the screen, for more views of NASA's explorations into outer space pop over to YouTube, what an amazing video, especially when we are told so many times not to look directly into the Sun!
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