The lifespan of a star depends on the mass of the star. The least massive stars will live the longest. The most massive stars in the Universe will use their fuel up in a few millions years and end in a explosion. The Low Mass stars can live up to 10 trillion years or more. The High Mass stars will only last for millions of years.
Yes, the brightness of the Sun has changed over time. When the Earth first formed, the Sun was cooler and smaller. The surface temperature has remained constant, but the increase in size, means that it's giving off more energy than before. With higher temperatures, it enables more fusion to occur. Therefore, the Sun has became brighter. According to studies, the Sun has gotten about 30% more luminous.
Yes, telescopes have been used to view the sun and other stars. When viewing the Sun, it is better to use a smaller telescope, because larger telescopes let in too much sunlight. It is also better to use a reflecting telescope. The most important aspect of a telescope is to make the object as bright as possible. When an object is bright, it allows astronomers to observe more information.
A star's lifespan is determined by it's mass. The Low Mass stars live longer than High Mass stars. Stars expand as they get older. The core of the star runs out of hydrogen, expanding the star. The star also becomes cool and less bright.
What is the average lifespan for a High Mass and Low Mass star?
ReplyDeleteThe lifespan of a star depends on the mass of the star. The least massive stars will live the longest. The most massive stars in the Universe will use their fuel up in a few millions years and end in a explosion. The Low Mass stars can live up to 10 trillion years or more. The High Mass stars will only last for millions of years.
DeleteDoes the brightness of the sun change overtime? Does it have anything to do with nuclear fission or the energy on the sun?
ReplyDeleteYes, the brightness of the Sun has changed over time. When the Earth first formed, the Sun was cooler and smaller. The surface temperature has remained constant, but the increase in size, means that it's giving off more energy than before. With higher temperatures, it enables more fusion to occur. Therefore, the Sun has became brighter. According to studies, the Sun has gotten about
Delete30% more luminous.
How old is the sun?
ReplyDeleteThe sun is 4.5 billion years old.
DeleteHave telescopes been used to view our sun and other stars? If so what types?
ReplyDeleteYes, telescopes have been used to view the sun and other stars. When viewing the Sun, it is better to use a smaller telescope, because larger telescopes let in too much sunlight. It is also better to use a reflecting telescope. The most important aspect of a telescope is to make the object as bright as possible. When an object is bright, it allows astronomers to observe more information.
DeleteHow does one know if a star is reaching the end of it's life?
ReplyDeleteA star's lifespan is determined by it's mass. The Low Mass stars live longer than High Mass stars. Stars expand as they get older. The core of the star runs out of hydrogen, expanding the star. The star also becomes cool and less bright.
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