What determines the color of a main sequence star?
Temperature translates to color, and this relationship between color and brightness (luminosity) for hydrogen-burning stars is called the main sequence. Massive hydrogen-burning stars are blue-white, the Sun is yellow, and low-mass stars are orange and red.
What is the primary reason for the star evolution?
The primary factor determining how a star evolves is its mass as it reaches the main sequence. The following is a brief outline tracing the evolution of a low-mass and a high-mass star. Stars are born out of the gravitational collapse of cool, dense molecular clouds.
Which is known as the biggest stars in the universe?
The largest known star in the universe is UY Scuti, a hypergiant with a radius around 1,700 times larger than the sun.
What is the first stage of a star life?
Stage 1- Stars are born in a region of high density Nebula, and condenses into a huge globule of gas and dust and contracts under its own gravity. This image shows the Orion Nebula or M42 . Stage 2 – A region of condensing matter will begin to heat up and start to glow forming Protostars.
What are the stages of stars?
7 Main Stages of a Star
- A Giant Gas Cloud. A star begins life as a large cloud of gas.
- A Protostar Is a Baby Star.
- The T-Tauri Phase.
- Main Sequence Stars.
- Expansion into Red Giant.
- Fusion of Heavier Elements.
- Supernovae and Planetary Nebulae.
Why do stars twinkle on clear nights?
The stars twinkle on a clear night because of atmospheric refraction of a star light.
Why do stars twinkle quizlet?
Why do stars twinkle? They twinkle because of Interference of our planets atmosphere with the light shining from far away objects. Our atmosphere has many moving air layers of different temps which bend or refract the light that make it look like its flickering.
What are the two most important properties of a telescope?
The two most important properties of a telescope are its light-collecting area and its angular resolution. A telescopes light-collecting area tells us how much total light it can collect at one time.