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which of the following measurements can be made only by recording and comparing the amount of light received from an astronomical source at many different times? which of the following measurements can be made only by recording and comparing the amount of light received from an astronomical source at many different times? the general shape of an interstellar cloud of gas the number of bright stars in a nearby star cluster the rate at which a variable star brightens and dims the color of a planet

Sagot :

The rate at which a variable star brightens and dims is determined by this process.

  • A light curve is the measurement of a celestial body's brightness at certain intervals and over a given period of time (hours, days, months...). This is called Light Curve Analysis.
  • Asteroids shine due to the Sun's light reflecting off their surface, and their brightness might vary due to one or more of the following factors: The asteroid's distance to us is changing (closer objects appear brighter).
  • The asteroid's phase, just like the Moon's, is changing as it orbits around the Sun (the larger the area of the asteroid that is illuminated, as seen from Earth, the brighter it will appear).
  • The asteroid, because of its irregular shape, reflects light differently as it spins. If the orbit of an asteroid is well known, the first two effects can be numerically calculated and their contributions removed from the measured light curve.
  • We are then left with a light curve whose changes are due solely to the spinning of the asteroid.

To know more about stars visit;

https://brainly.com/question/15868824

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