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

Author Question: Why can't we be certain that the Andromeda Galaxy exists today? What will be an ideal ... (Read 17 times)

cherise1989

  • Hero Member
  • *****
  • Posts: 555
on: Jul 27, 2018
Why can't we be certain that the Andromeda Galaxy exists today?
 
  What will be an ideal response?

Question 2

What do we mean by a primitive meteorite?
 
  A) a piece of rock that is essentially unchanged since it first condensed and accreted in the solar nebula some 4.6 billion years ago
  B) a meteorite that was discovered by primitive people
  C) a meteorite that fell to Earth at least 4 billion years ago
  D) a type of meteorite that is usually made mostly of high-density metals


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

bd5255

  • Sr. Member
  • ****
  • Posts: 386
Reply #1 on: Jul 27, 2018
Answer to Question 1

Since it lies 2.5 million light-years distant, the most recent image we have is still 2.5 million years out of date, so we cannot prove it is still there. It probably is, though.

Answer to Question 2

A


cherise1989

  • Member
  • Posts: 555
Reply 2 on: Jul 27, 2018
Wow, this really help

jamesnevil303

  • Member
  • Posts: 337
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

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?

Children with strabismus (crossed eyes) can be treated. They are not able to outgrow this condition on their own, but with help, it can be more easily corrected at a younger age. It is important for infants to have eye examinations as early as possible in their development and then another at age 2 years.

Did you know?

Women are two-thirds more likely than men to develop irritable bowel syndrome. This may be attributable to hormonal changes related to their menstrual cycles.

Did you know?

A serious new warning has been established for pregnant women against taking ACE inhibitors during pregnancy. In the study, the risk of major birth defects in children whose mothers took ACE inhibitors during the first trimester was nearly three times higher than in children whose mothers didn't take ACE inhibitors. Physicians can prescribe alternative medications for pregnant women who have symptoms of high blood pressure.

Did you know?

Atropine, along with scopolamine and hyoscyamine, is found in the Datura stramonium plant, which gives hallucinogenic effects and is also known as locoweed.

A laser-guided observation of the Milky Way Galaxy at the Paranal Observatory in Chile in 2010. A laser-guided observation of the Milky Way Galaxy at the Paranal Observatory in Chile in 2010.
Dynamics of a Grand-Design Spiral Galaxy Dynamics of a Grand-Design Spiral Galaxy
Cultures Ideal Body Types Cultures Ideal Body Types
What are examples of ideal forms? What are examples of ideal forms?
Plasma protein binding and drug availability: (a) The drug exists in a free state or is bound to ... Plasma protein binding and drug availability: (a) The drug exists in a free state or is bound to ...
4 QUESTIONS PEASE I NEED IT TODAY AND I DONT HAVE MORE CREDITS TO START A NEW TOPIC 4 QUESTIONS PEASE I NEED IT TODAY AND I DONT HAVE MORE CREDITS TO START A NEW TOPIC
Video: Rh blood type and complications during pregnancy & Fertilization

For a complete list of videos, visit our video library