See the map of New York. Wikipedia article: New York. Find out the distance between New York and other cities. Find out the distance between New York and the North Pole, the South Pole, the Equator, the Tropic of Cancer, the Tropic of Capricorn, the Arctic Circle, the Antarctic Circle.
The outer layers begin to expand, cool and shine less brightly. The expanding star is now called a Red Giant. The star expands to a Red Giant, below. Stage 8 - The helium core runs out, and the outer layers drift of away from the core as a gaseous shell, this gas that surrounds the core is called a Planetary Nebula.A Planetary Nebula. (Below, NGC 6543).he outer layers begin to expand, cool and shine less brightly. The expanding star is now called a Red Giant. The star expands to a Red Giant, below. Stage 8 - The helium core runs out, and the outer layers drift of away from the core as a gaseous shell, this gas that surrounds the core is called a Planetary Nebula.
What happens when a main-sequence star exhausts its core hydrogen fuel supply? The core shrinks while the rest of the star expands. The main source of energy for a star as it grows in size to become a red giant is _____. hydrogen fusion in a shell surrounding the central core: What is a helium flash? The sudden onset of helium fusion in the core of a low-mass star