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

Author Question: In the very first phase after the big bang, when the Universe was about a microsecond old, space was ... (Read 89 times)

RRMR

  • Hero Member
  • *****
  • Posts: 557
on: Jul 27, 2018
In the very first phase after the big bang, when the Universe was about a microsecond old, space was filled with____.
 
  a. high-energy photons
  b. protons and antiprotons
 c. protons, neutrons, electrons, and positrons (anti-electrons)
  d. electrons, and positrons (anti-electrons)
 e. protons, neutrons, electrons

Question 2

When mapping the interior of the Sun, astronomers must measure _____ as the photosphere moves up and down.
 
  a. Doppler shifts
 b. magnetic fields
  c. sunspots
 d. limb darkening
  e. supergranules


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

cegalasso

  • Sr. Member
  • ****
  • Posts: 295
Reply #1 on: Jul 27, 2018
Answer to Question 1

a

Answer to Question 2

a


RRMR

  • Hero Member
  • *****
  • Posts: 557
Reply #2 on: Jul 27, 2018
Thanks


cegalasso

  • Sr. Member
  • ****
  • Posts: 295
Reply #3 on: Jul 27, 2018
Welcome :)


« previous next »
 

Did you know?

Nitroglycerin is used to alleviate various heart-related conditions, and it is also the chief component of dynamite (but mixed in a solid clay base to stabilize it).

Did you know?

Your chance of developing a kidney stone is 1 in 10. In recent years, approximately 3.7 million people in the United States were diagnosed with a kidney disease.

Did you know?

Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.

Did you know?

Drug-induced pharmacodynamic effects manifested in older adults include drug-induced renal toxicity, which can be a major factor when these adults are experiencing other kidney problems.

Did you know?

There are approximately 3 million unintended pregnancies in the United States each year.

One proposed timeline of the origin of space, from physical cosmology. One proposed timeline of the origin of space, from physical cosmology.
True-color view of Mars seen through NASA's Hubble Space Telescope in 1999 True-color view of Mars seen through NASA's Hubble Space Telescope in 1999
Space Debris Space Debris
Environmental Systems in Space and Time Environmental Systems in Space and Time
Stages of Sleep in Cats: During the REM phase , its muscles go limp and it flops onto its side Stages of Sleep in Cats: During the REM phase , its muscles go limp and it flops onto its side
Two radio antennas are 130 m apart on a north-south line. The two antennas radiate in phase at ... Two radio antennas are 130 m apart on a north-south line. The two antennas radiate in phase at ...
Video: Enzyme structure - Properties of enzymes

For a complete list of videos, visit our video library