5 Questions
What did Hubble use to measure the speeds of celestial objects?
Spectroscopic red-shift data
What did Arno Penzias and Robert Wilson initially think the 'noise' they discovered was?
Radio interference from nearby New York City
What did Hubble's discovery of the speeds of celestial objects lead to?
Hubble’s law
What did Arno Penzias and Robert Wilson eventually recognize the 'noise' as?
Radiation from beyond the Milky Way
What did Hubble's discovery lead some to consider as a possible explanation?
Earth being at the center of the Universe
Study Notes
Hubble's Discovery
- Hubble used spectrographs to measure the speeds of celestial objects
Cosmic Microwave Background Radiation
- Arno Penzias and Robert Wilson initially thought the 'noise' they discovered was radio interference from pigeon droppings on their antenna
- Hubble's discovery of the speeds of celestial objects led to the understanding of the expanding universe
- Penzias and Wilson eventually recognized the 'noise' as the cosmic microwave background radiation, evidence of the Big Bang Theory
- Hubble's discovery led some to consider the Big Bang Theory as a possible explanation for the origin of the universe
Test your knowledge of the Big Bang Theory with this quiz. Watch a video and answer questions about cosmologists, particle physicists, the timeline of the Big Bang, and evidence supporting the theory. See how much you know about the origins of the universe.
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