Responses
a luminous object travels alongside an observer
a luminous object travels alongside an observer
a distant luminous object travels rapidly away from an observer
a distant luminous object travels rapidly away from an observer
a distant luminous object travels rapidly towards an observer
a distant luminous object travels rapidly towards an observer
a luminous object is stationary compared to an observer
7 answers
Blueshift is observed when:
a distant luminous object travels rapidly towards an observer.
This phenomenon occurs because the wavelengths of light emitted by the object are compressed, resulting in a shift towards the blue end of the spectrum as the object moves closer.
The redshift of light from galaxies indicates:
the universe is expanding.
This observation supports the Big Bang Theory, as it shows that galaxies are moving away from us and that the universe has been expanding since its formation.
A characteristic of dark matter is:
it has not been observed directly.
Dark matter does not emit, absorb, or reflect electromagnetic radiation, making it invisible and detectable only through its gravitational effects on visible matter.
The INCORRECT statement about Cosmic Microwave Background radiation is:
it appeared only a few years ago.
In reality, the Cosmic Microwave Background radiation is a remnant from the early universe, specifically from about 380,000 years after the Big Bang, not just a few years ago. The other statements about its uniform temperature and its consistency as a remnant of the Big Bang are correct.
