As a spaceship nears an event horizon, a clock on the spaceship will be observed:

A) to run faster.
B) to stop.
C) to run slowly.
D) to run backwards.
E) to run the same as one on Earth.


C

Physics & Space Science

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Which of the following best describes a filtergram?

A) It is a region inside a star where energy is carried outward as rising hot gas. B) It is composed of ionized gas trapped in a magnetic arch rising up through the photosphere. C) It is an atom in which an electron has moved from a lower to a higher energy level. D) It is a photograph taken in the light of a specific region of the spectrum of the Sun.

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Explain why galaxy-galaxy interactions are far more common than star-star interactions

What will be an ideal response?

Physics & Space Science

Harvard woman astronomer ________ discovered the period-luminosity relation

A) Antonia Maury B) Annie Cannon C) Cecilia Payne-Gaposchkin D) Henrietta Leavitt E) Williamina Fleming

Physics & Space Science

The isotope, tritium, has a half-life of 12.3 years. Assume we have 10 kg of the substance. How much tritium will be left after 30 years?

a. 0.20 kg b. 1.8 kg c. 0.18 kg d. 1.7 kg e. 4.1 kg

Physics & Space Science