Journey into the Unknown
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Questions and Answers

What is SETI's main goal?

  • To detect mini black holes and pulsars
  • To theorize about alien megastuctures
  • To search for radio signals from extraterrestrial civilizations (correct)
  • To study the spiral galaxy like the Milky Way

What was detected coming from a spiral galaxy 500 million light-years from Earth?

  • Alien megastuctures
  • Bizarre and intermittent fast radio bursts (correct)
  • Pulsating signatures from space
  • Mini black holes

What do some scientists speculate the pulsating signatures to be the result of?

  • Energy signals from Earth
  • Solar flares from the Milky Way
  • Satellite communications
  • Mini black holes, or pulsars, or even alien megastuctures (correct)

What did scientists at Harvard theorize about the energy needed to send a radio signal to a distant galaxy?

<p>It would require a planet twice the size of (B)</p> Signup and view all the answers

What is the potential significance of the detected signals?

<p>They could be aliens trying to communicate with us (A)</p> Signup and view all the answers

What percentage of their total strength does the average human use during maximal exercise?

<p>60% (C)</p> Signup and view all the answers

What is the purpose of the brain sending pain through the body during exertion?

<p>To signal not to push too far (C)</p> Signup and view all the answers

Why is it mentioned that if one could muster 100% of their strength, 100% of the time, they would tear muscles and break bones?

<p>To highlight the body's limitations (B)</p> Signup and view all the answers

What is the world record for deadlifting?

<p>524 kg (1,155 lbs) (D)</p> Signup and view all the answers

What percentage of their strength can professional athletes tap into with rigorous training?

<p>80% (C)</p> Signup and view all the answers

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