1. A star’s parallax were observed to oscillate— regularly increase in angle and then decrease in angle— over a period of 100 years? What would that imply about the star? 2. The Sun were an M-type...

1. A star’s parallax were observed to oscillate— regularly increase in angle and then decrease in angle— over a period of 100 years? What would that imply about the star?

2. The Sun were an M-type star, rather than a G-type star? Assuming that Earth orbiting the M-type star had the same composition and orbit distance as it does today, what would be different here?