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A Ray of Light in a Sea of Dark Matter / Charles Keeton.

By: Material type: TextTextSeries: PinpointsPublisher: New Brunswick, NJ : Rutgers University Press, [2014]Copyright date: ©2015Description: 1 online resource (104 p.) : 15 b-w imagesContent type:
Media type:
Carrier type:
ISBN:
  • 9780813572123
  • 9780813565323
Subject(s): DDC classification:
  • 523.1126 23
LOC classification:
  • QB791.3 .K44 2014
  • QB791.3 .K44 2014
Other classification:
  • online - DeGruyter
Online resources: Available additional physical forms:
  • Issued also in print.
Contents:
Frontmatter -- Contents -- Preface -- 1. What's in the Dark? -- 2. When Mass Is Like Glass -- 3. How Do You Weigh a Galaxy? -- 4. Is Dark Matter MACHO or WIMPy? -- 5. Finding What's Missing -- 6. "A Long Time Ago in a Galaxy Far, Far Away" -- Glossary -- Notes -- Notes on Sources -- About the Author
Summary: What's in the dark? Countless generations have gazed up at the night sky and asked this question-the same question that cosmologists ask themselves as they study the universe. The answer turns out to be surprising and rich. The space between stars is filled with an exotic substance called "dark matter" that exerts gravity but does not emit, absorb, or reflect light. The space between galaxies is rife with "dark energy" that creates a sort of cosmic antigravity causing the expansion of the universe to accelerate. Together, dark matter and dark energy account for 95 percent of the content of the universe. News reporters and science journalists routinely talk about these findings using terms that they assume we have a working knowledge of, but do you really understand how astronomers arrive at their findings or what it all means? Cosmologists face a conundrum: how can we study substances we cannot see, let alone manipulate? A powerful approach is to observe objects whose motion is influenced by gravity. Einstein predicted that gravity can act like a lens to bend light. Today we see hundreds of cases of this-instances where the gravity of a distant galaxy distorts our view of a more distant object, creating multiple images or spectacular arcs on the sky. Gravitational lensing is now a key part of the international quest to understand the invisible substance that surrounds us, penetrates us, and binds the universe together. A Ray of Light in a Sea of Dark Matter offers readers a concise, accessible explanation of how astronomers probe dark matter. Readers quickly gain an understanding of what might be out there, how scientists arrive at their findings, and why this research is important to us. Engaging and insightful, Charles Keeton gives everyone an opportunity to be an active learner and listener in our ever-expanding universe. Watch a video with Charles Keeton: Watch video now. (http://www.youtube.com/watch?v=Uc3byXNS1G0).
Holdings
Item type Current library Call number URL Status Notes Barcode
eBook eBook Biblioteca "Angelicum" Pont. Univ. S.Tommaso d'Aquino Nuvola online online - DeGruyter (Browse shelf(Opens below)) Online access Not for loan (Accesso limitato) Accesso per gli utenti autorizzati / Access for authorized users (dgr)9780813565323

Frontmatter -- Contents -- Preface -- 1. What's in the Dark? -- 2. When Mass Is Like Glass -- 3. How Do You Weigh a Galaxy? -- 4. Is Dark Matter MACHO or WIMPy? -- 5. Finding What's Missing -- 6. "A Long Time Ago in a Galaxy Far, Far Away" -- Glossary -- Notes -- Notes on Sources -- About the Author

restricted access online access with authorization star

http://purl.org/coar/access_right/c_16ec

What's in the dark? Countless generations have gazed up at the night sky and asked this question-the same question that cosmologists ask themselves as they study the universe. The answer turns out to be surprising and rich. The space between stars is filled with an exotic substance called "dark matter" that exerts gravity but does not emit, absorb, or reflect light. The space between galaxies is rife with "dark energy" that creates a sort of cosmic antigravity causing the expansion of the universe to accelerate. Together, dark matter and dark energy account for 95 percent of the content of the universe. News reporters and science journalists routinely talk about these findings using terms that they assume we have a working knowledge of, but do you really understand how astronomers arrive at their findings or what it all means? Cosmologists face a conundrum: how can we study substances we cannot see, let alone manipulate? A powerful approach is to observe objects whose motion is influenced by gravity. Einstein predicted that gravity can act like a lens to bend light. Today we see hundreds of cases of this-instances where the gravity of a distant galaxy distorts our view of a more distant object, creating multiple images or spectacular arcs on the sky. Gravitational lensing is now a key part of the international quest to understand the invisible substance that surrounds us, penetrates us, and binds the universe together. A Ray of Light in a Sea of Dark Matter offers readers a concise, accessible explanation of how astronomers probe dark matter. Readers quickly gain an understanding of what might be out there, how scientists arrive at their findings, and why this research is important to us. Engaging and insightful, Charles Keeton gives everyone an opportunity to be an active learner and listener in our ever-expanding universe. Watch a video with Charles Keeton: Watch video now. (http://www.youtube.com/watch?v=Uc3byXNS1G0).

Issued also in print.

Mode of access: Internet via World Wide Web.

In English.

Description based on online resource; title from PDF title page (publisher's Web site, viewed 30. Aug 2021)