According to Modern Science,approximately How Old Is the Sun?
A)4 $\frac{1}{2}$

Q81: What is the Sun made of (by

Q82: Process of Science: How do we know

Q83: Why do sunspots appear dark in pictures

Q84: Which is closest to the temperature of

Q85: When is/was gravitational contraction an important energy-generation

Q87: What observations characterize solar maximum?<br>A)The Sun becomes

Q88: Although the Sun does not generate energy

Q89: Why are neutrinos so difficult to detect?<br>A)because

Q90: How is the sunspot cycle directly relevant

Q91: Might changes in the Sun affect weather