Flashcardziz: Solar System Formation/Stars

Front

What is nuclear fusion?

Back

Nuclear fusion is the process by which two light atomic nuclei combine to form a heavier nucleus, releasing energy in the process. This is how the Sun produces its energy.

Front

What is the main component of the Sun?

Back

The Sun is primarily composed of hydrogen (about 74%) and helium (about 24%).

Front

What are red dwarf stars?

Back

Red dwarf stars are small and cool stars on the main sequence, and they are the most common type of star in the Milky Way galaxy.

Front

What is the role of gravity in star formation?

Back

Gravity pulls together gas and dust in space, causing them to collapse and form stars.

Front

What is a solar system?

Back

A solar system is a collection of celestial bodies, including a star and the planets, moons, asteroids, comets, and other objects that are bound by gravity to that star.

Front

What is the Horsehead Nebula?

Back

The Horsehead Nebula is a dark nebula in the Orion constellation, known for its distinctive shape and is a region where new stars are forming.

Front

What happens to a gas cloud when it contracts?

Back

When a gas cloud contracts, it becomes denser and hotter, eventually leading to the formation of stars.

Front

What is a brown dwarf star?

Back

A brown dwarf star is a substellar object that is too small to sustain hydrogen fusion in its core, often referred to as a 'failed star'.

Front

What is the significance of temperature in star formation?

Back

Temperature affects the energy and motion of particles in a gas cloud, influencing its ability to collapse under gravity.

Front

What is the lifecycle of a star?

Back

The lifecycle of a star includes stages such as formation, main sequence, red giant, and ultimately, its end as a white dwarf, neutron star, or black hole.