Understanding Our Universe
Understanding Our Universe
3rd Edition
ISBN: 9780393614428
Author: PALEN, Stacy, Kay, Laura, Blumenthal, George (george Ray)
Publisher: W.w. Norton & Company,
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Stellar evolution
We may see thousands of stars in the dark sky. Our universe consists of billions of stars. Stars may appear tiny to us but they are huge balls of gasses. Sun is a star of average size. Some stars are even a thousand times larger than the sun. The stars d…
Red Shift
It is an astronomical phenomenon. In this phenomenon, increase in wavelength with corresponding decrease in photon energy and frequency of radiation of light. It is the displacement of spectrum of any kind of astronomical object to the longer wavelengths…
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Chapter 1, Problem 26QAP
To determine

The meaning of the statement that humans are made of stardust.

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A. Arrange the following stars in order of increasing temperature: Red, white, blue, yellow red100 billion stars Galaxies are the biggest groups of stars and can contain anywhere from a few million stars to many billions of stars. Dark energy and dark matter are two completely different things.
A star that is moving toward Earth will   a. have its spectral lines shifted to the red.   b. have its spectral lines shifted to the blue.   c. appear hotter than it actually is.   d. appear cooler than it actually is.   e. appear dimmer than it actually is.
A scientist, using a telescope, sees arcs of light around a galaxy. In 3–5 sentences, explain the cause of the arcs of light.

Chapter 1 Solutions

Understanding Our Universe

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