If we were to magically replace our sun with the supergiant star, betelgeuse, how many planets in our solar system would be inside of the star itself? (hint: compare the semi-major axis of the planets to the stars radius). clearly state the values that you find and convert to answer this question.

Mercury, Venus, Earth and Mars

Explanation:

The radius of the super giant star Betelgeuse star is about 800 times the radius of the Sun.

Radius of Betelgeuse = 800 × 695510 km  = 5.56×10⁷ km = 3.72 AU

Semi Major axis of Mercury = 0.3 AU

Semi Major axis of Venus = 0.72 AU

Semi Major axis of Earth = 1 AU

Semi Major axis of Mars = 1.5 AU

Semi Major axis of Jupiter = 5.2 AU

Thus, from the above data, it can be concluded that Mercury, Venus, Earth and Mars would be within the star itself.

the precambrian aged rocks could be found in australia. australia is a region that has a lot of ancient civilization history from million years ago. in this region, there are a lot of recognizable fossils buried in its land which is considered a precambrian-aged rocks