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

Author Question: How do we know that there are intergalactic clouds between a distant quasar and us? A) We see ... (Read 65 times)

asan beg

  • Hero Member
  • *****
  • Posts: 570
on: Jul 27, 2018
How do we know that there are intergalactic clouds between a distant quasar and us?
 
  A) We see hydrogen emission lines at redshifts smaller than that of the quasar.
  B) We see hydrogen absorption lines at redshifts smaller than that of the quasar.
  C) We see hydrogen emission lines at redshifts greater than that of the quasar.
  D) We see hydrogen absorption lines at redshifts greater than that of the quasar.
  E) We see that the emission lines from the quasar are lessened by intervening gas and dust.

Question 2

According to Gwen back on Earth, about how long does it take Jackie to reach Vega?
 
  A) about a month
  B) about 10 years
  C) about 25 years
  D) about 100 years
  E) about 1,000 years


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

AaaA

  • Sr. Member
  • ****
  • Posts: 339
Reply #1 on: Jul 27, 2018
Answer to Question 1

B

Answer to Question 2

C


asan beg

  • Hero Member
  • *****
  • Posts: 570
Reply #2 on: Jul 27, 2018
Both answers were spot on, thank you once again


AaaA

  • Sr. Member
  • ****
  • Posts: 339
Reply #3 on: Jul 27, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

In 1885, the Lloyd Manufacturing Company of Albany, New York, promoted and sold "Cocaine Toothache Drops" at 15 cents per bottle! In 1914, the Harrison Narcotic Act brought the sale and distribution of this drug under federal control.

Did you know?

Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

Did you know?

In Eastern Europe and Russia, interferon is administered intranasally in varied doses for the common cold and influenza. It is claimed that this treatment can lower the risk of infection by as much as 60–70%.

Did you know?

There used to be a metric calendar, as well as metric clocks. The metric calendar, or "French Republican Calendar" divided the year into 12 months, but each month was divided into three 10-day weeks. Each day had 10 decimal hours. Each hour had 100 decimal minutes. Due to lack of popularity, the metric clocks and calendars were ended in 1795, three years after they had been first marketed.

Did you know?

There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.

Birth Clouds Birth Clouds
Distant Galaxies Distant Galaxies
Cloud Types: High Clouds Cloud Types: High Clouds
Cloud Types: High Clouds Cloud Types: High Clouds
Clouds: Unusual Clouds Clouds: Unusual Clouds
E chart for testing distant vision E chart for testing distant vision
Video: Spinal Cord Injury Animation

For a complete list of videos, visit our video library