Podcast
Questions and Answers
What is the relationship between the speed of celestial objects and their distance from Earth, according to Hubble's law?
What is the relationship between the speed of celestial objects and their distance from Earth, according to Hubble's law?
- The speed of celestial objects decreases as they move away from Earth
- The speed of celestial objects is directly proportional to their distance from Earth (correct)
- The speed of celestial objects is inversely proportional to their distance from Earth
- There is no relationship between the speed of celestial objects and their distance from Earth
What is the term used to describe the speed at which celestial objects move away from Earth?
What is the term used to describe the speed at which celestial objects move away from Earth?
- Blueshift
- Recessional velocity (correct)
- Expansion velocity
- Redshift
What is the significance of the data point with a negative recessional velocity in Hubble's graph?
What is the significance of the data point with a negative recessional velocity in Hubble's graph?
- It indicates an object at rest with respect to Earth
- It indicates an object moving in a circular motion around Earth
- It indicates an object moving away from Earth at a slower rate
- It indicates an object moving towards Earth (correct)
What is the technique used by Henrietta Leavitt to measure distances to remote objects in the sky?
What is the technique used by Henrietta Leavitt to measure distances to remote objects in the sky?
What is the implication of Hubble's law on our understanding of the universe?
What is the implication of Hubble's law on our understanding of the universe?
What is the speed at which the galaxy M 83 is moving away from Earth?
What is the speed at which the galaxy M 83 is moving away from Earth?
What is the relationship between the distance of a galaxy from Earth and its velocity, according to Hubble's discovery?
What is the relationship between the distance of a galaxy from Earth and its velocity, according to Hubble's discovery?
What is the analogy used to describe the expansion of the Universe?
What is the analogy used to describe the expansion of the Universe?
What did Hubble discover about the objects he was observing?
What did Hubble discover about the objects he was observing?
What theory did Hubble's discovery provide additional evidence for?
What theory did Hubble's discovery provide additional evidence for?
What is the difference between the expansion of a balloon and the expansion of the Universe?
What is the difference between the expansion of a balloon and the expansion of the Universe?
What is the name of the Belgian priest and astronomer who first proposed the Big Bang Theory?
What is the name of the Belgian priest and astronomer who first proposed the Big Bang Theory?
What did Hubble’s law allow astronomers to calculate?
What did Hubble’s law allow astronomers to calculate?
Why did geologists reject Hubble’s initial estimate of the Universe’s age?
Why did geologists reject Hubble’s initial estimate of the Universe’s age?
What is the current estimated age of the Universe?
What is the current estimated age of the Universe?
What is special about the galaxies seen in the Hubble eXtreme Deep Field (XDF)?
What is special about the galaxies seen in the Hubble eXtreme Deep Field (XDF)?
What does the image of the Hubble eXtreme Deep Field (XDF) represent?
What does the image of the Hubble eXtreme Deep Field (XDF) represent?
Why did Hubble’s initial image of the Andromeda Galaxy appear reversed?
Why did Hubble’s initial image of the Andromeda Galaxy appear reversed?
