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 89 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
Excellent

mammy1697

  • Member
  • Posts: 341
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

Liver spots have nothing whatsoever to do with the liver. They are a type of freckles commonly seen in older adults who have been out in the sun without sufficient sunscreen.

Did you know?

Many medications that are used to treat infertility are injected subcutaneously. This is easy to do using the anterior abdomen as the site of injection but avoiding the area directly around the belly button.

Did you know?

Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.

Did you know?

One way to reduce acid reflux is to lose two or three pounds. Most people lose weight in the belly area first when they increase exercise, meaning that heartburn can be reduced quickly by this method.

Did you know?

There are 60,000 miles of blood vessels in every adult human.

Hypothetical evolution of stamens, carpels, and pistil Hypothetical evolution of stamens, carpels, and pistil
The "Emu in the sky," a constellation defined by dark clouds rather than the stars. The "Emu in the sky," a constellation defined by dark clouds rather than the stars.
The first dark spot observed on Uranus. Image obtained by the HST ACS in 2006. The first dark spot observed on Uranus. Image obtained by the HST ACS in 2006.
Five Galaxies and Their Spectra Five Galaxies and Their Spectra
Mapping Dark Matter Mapping Dark Matter
Hypothetical Range of Perceived Brightness (in jnds) as a Function of Intensity Hypothetical Range of Perceived Brightness (in jnds) as a Function of Intensity
Video: Chemical Buffers - protein buffer, phosphate buffer system and bicarbonate buffer system

For a complete list of videos, visit our video library