As the sun ages, it will expand into a red giant, engulfing the inner planets of our solar system, including Earth. Eventually, it will shed its outer layers and become a planetary nebula, leaving behind a dense core called a white dwarf. The white dwarf will gradually cool over billions of years, eventually fading into a black dwarf.
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Moon phases happen as a result of the relative positions of the Earth, Sun, and Moon. As the Moon orbits the Earth, different portions of its illuminated side are visible from Earth, creating the different phases like new moon, full moon, waxing, and waning crescents. This cycle takes about 29.5 days to complete.
Because the moon gets between the sun and the Earth. You can't see a new moon because the sun is behind it and not shining on the face that we always see. A solar eclipse can only happen when the moon is between the sun and earth, perfectly aligned.
it gets dark
The Sun and moon will never meet