Embedded Files
Life cycles of stars
summary: I learned that not all stars have the same life cycle. When a star forms it can either be a average star or a massive star, this affects the whole life of a star. The average star develops into a white dwarf while the massive star can develop into a blackhole or a neutron star.
The route the star takes depends on its size.
A star forms in a nebula depending on its size it will grow into a red giant or a red supergiant, after that a red giant will turn into a planetary nebula and the red supergiant will turn into a supernova. After that a planetary nebula becomes a white dwarf. The supernova either turns into a neutron star or a black hole.
HR Diagram
The diagram uses to variables, temperature and luminosity. The HR diagram helps classify stars into 4 main sections, white dwarfs, giants, supergiant, and main sequence. Our sun resides in the main sequence group. For main sequence star the hotter a star is the brighter it shines. Normally when we think of extremely hot we think red but in the HR diagram its quite the opposite. Blue signifies super hot and red means warm.
Corner meanings
Top Left: Hot and bright
Top Right: Cool and Bright
Bottom Left: Hot and dim
Bottom right: cool and dim
Galaxies
A galaxy is a system made up dust,gas,dark matter, and stars held together by gravity. There are 3 main types of galaxies:
Spiral galaxy: made up of many new stars, old stars at center of the Galaxy and new ones around them. Has a lot of dust.
Elliptical Galaxy: Made up of old stars, has no dust to make new stars.
Irregular Galaxy: has a lot of dust to create stars, smaller then Elliptical galaxies.
Page updated
Report abuse