About 10 billion years. We are 4.5 billion years in now.
main sequence
The term "main sequence" refers to stars that are in the phase of their life cycle where they are fusing hydrogen into helium in their cores. It is called the main sequence because the majority of a star's life is spent in this phase, during which it maintains a stable energy output and size.
The portion of a star's life cycle when it is using hydrogen for fuel is called the main sequence phase. This is when a star fuses hydrogen in its core to produce energy and maintain stability. Stars spend the majority of their lives in this phase.
The sun's life cycle includes the stages of formation, main-sequence, red giant, and white dwarf. It is currently in the main-sequence stage, where it fuses hydrogen into helium in its core. Eventually, it will expand into a red giant before shedding its outer layers and becoming a white dwarf.
No, Vega is a main-sequence star, meaning it is currently fusing hydrogen into helium in its core. The star is relatively young compared to our Sun, so it still has a long life ahead of it on the main sequence.
main sequence
The "main sequence".
Main sequence
The main sequence.
About midway (4.5 billion years) through the main sequence.
hydrogen fusion
False. The sun is a yellow main sequence star.
How does the life cycle of humans compare to the life cycle of a star? They both have stages where they are born and die which is in the main sequence and supernova and in a human they are born in a womb and die of old age.
A protostar generates energy by friction whereas a main sequence star generates energy by fusion.
A protostar generates energy by friction whereas a main sequence star generates energy by fusion.
The Sun is a medium mass star in main sequence.
Yes, the sun is classified as a G2V star. This means it is a main-sequence star of spectral type G, and the "V" indicates that it is in the main sequence phase of its life cycle.