This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Process of Science: Given that Einstein's equations naturally showed the possibility of an ... (Read 56 times)

TFauchery

  • Hero Member
  • *****
  • Posts: 500
on: Jul 27, 2018
Process of Science: Given that Einstein's equations naturally showed the possibility of an accelerating Universe, why have astronomers only recently found strong evidence for dark energy?
 
  What will be an ideal response?

Question 2

Elements heavier than hydrogen and helium constitute about ________ of the mass of the interstellar medium.
 
  A) 0.002
  B) 2
  C) 70
  D) 98


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

medine

  • Sr. Member
  • ****
  • Posts: 344
Reply #1 on: Jul 27, 2018
Answer to Question 1

The difference between a coasting and accelerating expansion is only apparent at very large lookback times. It therefore requires careful observations of white dwarf supernovae in distant galaxies. This only became possible a little over a decade ago. Similarly, we have only recently gained the instrumentation possible to study the tiny fluctuations in the cosmic microwave background that also point to a flat Universe that is indicative of dark energy.

Answer to Question 2

B


TFauchery

  • Member
  • Posts: 500
Reply 2 on: Jul 27, 2018
YES! Correct, THANKS for helping me on my review

brbarasa

  • Member
  • Posts: 308
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

Asthma occurs in one in 11 children and in one in 12 adults. African Americans and Latinos have a higher risk for developing asthma than other groups.

Did you know?

Vital signs (blood pressure, temperature, pulse rate, respiration rate) should be taken before any drug administration. Patients should be informed not to use tobacco or caffeine at least 30 minutes before their appointment.

Did you know?

People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.

Did you know?

Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.

Did you know?

Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.

Effects of Therapy for Stuttering A functional MRI scan shows regions of the superior temporal lobe Effects of Therapy for Stuttering A functional MRI scan shows regions of the superior temporal lobe
Politics, Power and the Common Good: An Introduction to Political Science, 5/E Politics, Power and the Common Good: An Introduction to Political Science, 5/E
Graphing linear equations Graphing linear equations
High school science classes are required to use deductive logic High school science classes are required to use deductive logic
Einstein telescope. Einstein telescope.
State the equations State the equations
Video: Negative Feedback Regulation of Blood Pressure

For a complete list of videos, visit our video library