Stars
Ancient humans, and other early cultures observed single bring lights in the night sky that would appear suddenly and then disappear, called what?
What is a Guest Star
The Sun generates its energy through this process
Nuclear fusion
This type of star indicates the end of a life cycle, in a "Sun sized" star
What is a white dwarf
Describe a Guest Star is
A guest star refers to a phenomenon where a star suddenly becomes much brighter than usual, often outshining all other stars in the sky. This brightness increase is typically caused by a sudden release of energy, often due to a catastrophic event such as a supernova explosion or a stellar merger.
Where is most of the fusion taking place in the sun?
The core
True or False. Small stars live longer than large stars since smaller ones burn fuel at a slower rate.
What is TRUE
What is the force driving nuclear fusion?
The force of gravity
This is what the Sun will become once is runs out of fuel
A red giant
Extremely massive stars are born, the become main sequence stars, the grow into red supergiants, supernova and then can form this
What is a black hole or a neutron star
An astronomer investigating a star determines that the light wavelengths she observes are longer than those expected to be emitted by the star. This information says that this star must be moving in this direction in comparison to the Earth's position.
What is moving away from the Earth
This star is the closest star to Earth
What is the Sun
Describe nuclear fusion
Nuclear fusion is a process in which two atomic nuclei combine to form a heavier nucleus, releasing an enormous amount of energy in the process. It is the fundamental process that powers the sun and other stars, converting mass into energy through the fusion of hydrogen nuclei into helium nuclei.
When viewing the spectra of stars, what do the bluer colors indicate?
Shorter wavelengths and hotter temperatures
This serves as one of the most important pieces of evidence supporting the Big Bang model of the universe's origin and evolution. Studying its properties and fluctuations allows scientists to probe the universe's early stages and gain deeper insights into fundamental cosmological questions.
cosmic microwave background (CMB) radiation
The element that the Sun fuses to produce the energy and light it gives off
What is hydrogen
The two forces that oppose each other and are constantly battling inside of a star
What are fusion pressure and gravity
The star will be in equilibrium
The term used to describe the movement in spectral lines toward either the red or blue end of the visible spectrum to support the Big Bang Theory
What is doppler shift