This planner acted as a reminder for regular annual events such as religious holidays, but it also offered space for people to write down the activities or events they would be attending in the future.
The sun is the most ancient object in our solar system. The formation of all other objects in the solar system was based on the sun including all the planets, their respective moons, and all the asteroids. Scientists put the estimated age of the sun at 4.5 billion years which makes the sun a middle-aged star.
Our Sun is a 4.5 billion-year-old star – a hot glowing ball of hydrogen and helium at the center of our solar system. The Sun is about 93 million miles (150 million kilometers) from Earth, and without its energy, life as we know it could not exist here on our home planet. The Sun is the largest object in our solar system.
The Sun is so big it takes up 99% of the matter in our solar system. The 1% left over is taken up by planets, asteroids, moons and other matter. The Sun is about 4.5 billion years old. It is thought to be halfway through its lifetime. Stars get bigger as they get older. As the Sun ages, it will get bigger.
When the Sun is about 7 billion years old it will slowly start to change and will become bigger and cooler. By the time it is 10 billion years old it will have changed into a red giant and its atmosphere will stretch out to near where the Earth is today. The Sun will grow old in much the same way as humans do.
Astronomers have found some stars that are 100 times bigger than the Sun and others that are 10 times smaller. The Sun is also right in the middle of its lifecycle. Right now, our Sun is in a stage called yellow dwarf. It is about 4.5 billion years old. In another 5 billion years the Sun will become a big, cool star called a red giant.
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