It creates a shadow.Hope I helped.
Because they found so many ways to use them
About 1.3 million Earths could fit inside the sun. The mass of the sun is 1.989 x 1030 kilograms, about 333,000 times the mass of the Earth. ... This artist's illustration compares the sizes of the sun and a red giant star. The red giant has more than 5 solar radii.
Generating renewable energy sources are important because it offers significant public health benefits. The air and water pollution emitted by coal and natural gas plants is linked to breathing problems, neurological damage, heart attacks and cancer.