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

Author Question: Dark matter in galaxies and clusters of galaxies is purely hypothetical because we have no way of ... (Read 120 times)

saraeharris

  • Hero Member
  • *****
  • Posts: 546
on: Jul 27, 2018
Dark matter in galaxies and clusters of galaxies is purely hypothetical because we have no way of detecting its presence.
 
  Indicate whether the statement is true or false

Question 2

Consider the following statement, and explain whether or not it is sensible: If you had a very fast spaceship, you could travel to the celestial sphere in about 100 years.
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

frankwu0507

  • Sr. Member
  • ****
  • Posts: 322
Reply #1 on: Jul 27, 2018
Answer to Question 1

FALSE

Answer to Question 2

This statement does not make sense because the celestial sphere is a concept and not a physical object.


saraeharris

  • Member
  • Posts: 546
Reply 2 on: Jul 27, 2018
YES! Correct, THANKS for helping me on my review

Bigfoot1984

  • Member
  • Posts: 321
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.

Did you know?

Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.

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?

GI conditions that will keep you out of the U.S. armed services include ulcers, varices, fistulas, esophagitis, gastritis, congenital abnormalities, inflammatory bowel disease, enteritis, colitis, proctitis, duodenal diverticula, malabsorption syndromes, hepatitis, cirrhosis, cysts, abscesses, pancreatitis, polyps, certain hemorrhoids, splenomegaly, hernias, recent abdominal surgery, GI bypass or stomach stapling, and artificial GI openings.

Did you know?

Medications that are definitely not safe to take when breastfeeding include radioactive drugs, antimetabolites, some cancer (chemotherapy) agents, bromocriptine, ergotamine, methotrexate, and cyclosporine.

A hypothetical example of the bottleneck effect. A hypothetical example of the bottleneck effect.
Synaptic response of photoreceptors to dark and light. Synaptic response of photoreceptors to dark and light.
Creation of Spiral and Elliptical Galaxies Creation of Spiral and Elliptical Galaxies
Areas of sclerosis (see arrows) in the white matter of a patient with MS. Areas of sclerosis (see arrows) in the white matter of a patient with MS.
Data for a Hypothetical Paternity Test Using 13 CODIS Genes Data for a Hypothetical Paternity Test Using 13 CODIS Genes
Video: Covalent bonds - role in the body

For a complete list of videos, visit our video library