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

Author Question: How did Herschel try to map our Galaxy 200 years ago, and why did he fail? What will be an ideal ... (Read 73 times)

humphriesbr@me.com

  • Hero Member
  • *****
  • Posts: 550
on: Jul 27, 2018
How did Herschel try to map our Galaxy 200 years ago, and why did he fail?
 
  What will be an ideal response?

Question 2

The first successful landers on the surface of Mars were:
 
  A) Mariners 4 and 5 in 1965.
  B) Vikings 1 and 2 in 1976.
  C) Voyagers 1 and 2 in 1979.
  D) Pathfinder and Sojourner in 1997.
  E) Spirit and Opportunity in 2004.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

orangecrush

  • Sr. Member
  • ****
  • Posts: 350
Reply #1 on: Jul 27, 2018
Answer to Question 1

His star counts revealed the galactic disk, but the dark nebulae of dust blocked everything except the closer spiral arms, making him think we lay near the center.

Answer to Question 2

B


humphriesbr@me.com

  • Hero Member
  • *****
  • Posts: 550
Reply #2 on: Jul 27, 2018
Thanks


orangecrush

  • Sr. Member
  • ****
  • Posts: 350
Reply #3 on: Jul 27, 2018
Welcome :)


« previous next »
 

Did you know?

Approximately one in four people diagnosed with diabetes will develop foot problems. Of these, about one-third will require lower extremity amputation.

Did you know?

A headache when you wake up in the morning is indicative of sinusitis. Other symptoms of sinusitis can include fever, weakness, tiredness, a cough that may be more severe at night, and a runny nose or nasal congestion.

Did you know?

About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.

Did you know?

Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.

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).

Deciduous and permanent teeth. (A) The deciduous teeth, with the age of eruption given in months; (B Deciduous and permanent teeth. (A) The deciduous teeth, with the age of eruption given in months; (B
The Long Valley Caldera Erupted the Bishop Ash 760,000 Years Ago The Long Valley Caldera Erupted the Bishop Ash 760,000 Years Ago
Midway Island, an inhospitable atoll acquired in 1867, was valuable as a military base located midwa Midway Island, an inhospitable atoll acquired in 1867, was valuable as a military base located midwa
Growth of the body and brain is dramatic over the first 2 years. Growth of the body and brain is dramatic over the first 2 years.
Extinction and extirpation per years Extinction and extirpation per years
A man put aside $5710.00 at the end of every 3 months for seven years. How much will he have ... A man put aside $5710.00 at the end of every 3 months for seven years. How much will he have ...
Video: Interview with an Anorexic Woman (Part 1 of 2)

For a complete list of videos, visit our video library