Question

1. what happens to the suns atmosphere as the core grows hotter?
2. what type of star will the sun eventually turn into?
3. what is the name of the brightest star in the night sky?

Explanation:

1. As the Sun's core grows hotter, increased thermal pressure pushes the outer atmospheric layers outward, causing the atmosphere to expand and cool, becoming a red giant's extended envelope.
2. The Sun is a low-mass star; once it exhausts all its nuclear fuel, it will shed its outer layers and leave behind a dense, Earth-sized stellar remnant.
3. This star is located in the constellation Canis Major and has the highest apparent brightness as seen from Earth.

Answer:

1. The Sun's atmosphere will expand and cool, forming the outer layers of a red giant star.
2. A white dwarf star
3. Sirius (also called Alpha Canis Majoris)