« previous next »

Author Question: About how many galaxies are presently known in our Local Group? A) 3 B) 27 C) 55 D) 107 E) ... (Read 47 times)

WhattoUnderstand

  • Hero Member
  • *****
  • Posts: 517
on: Jul 27, 2018
About how many galaxies are presently known in our Local Group?
 
  A) 3 B) 27 C) 55 D) 107 E) 254

Question 2

Contrast the orbits of comets and asteroids.
 
  What will be an ideal response?


fur

  • Sr. Member
  • ****
  • Posts: 309
Reply #1 on: Jul 27, 2018
Answer to Question 1

C

Answer to Question 2

Comet orbits are high in eccentricity and come from all directions in space; most are far beyond the orbit of Neptune during most of their orbits. Asteroid orbits are much more circular, and most lie close to the ecliptic between the orbits of Mars and Jupiter.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Certain topical medications such as clotrimazole and betamethasone are not approved for use in children younger than 12 years of age. They must be used very cautiously, as directed by a doctor, to treat any child. Children have a much greater response to topical steroid medications.

Did you know?

Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.

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?

Hypertension is a silent killer because it is deadly and has no significant early symptoms. The danger from hypertension is the extra load on the heart, which can lead to hypertensive heart disease and kidney damage. This occurs without any major symptoms until the high blood pressure becomes extreme. Regular blood pressure checks are an important method of catching hypertension before it can kill you.

Did you know?

Complications of influenza include: bacterial pneumonia, ear and sinus infections, dehydration, and worsening of chronic conditions such as asthma, congestive heart failure, or diabetes.

Local/long distance cell Signaling Local/long distance cell Signaling
Creation of Spiral and Elliptical Galaxies Creation of Spiral and Elliptical Galaxies
Local Anesthetics Local Anesthetics
Basic Food Group Choices for a 1,200 Calorie Eating Plan Basic Food Group Choices for a 1,200 Calorie Eating Plan
Calculation of the Amount of the Local Anesthetic and Vasoconstrictor Calculation of the Amount of the Local Anesthetic and Vasoconstrictor
Calculus help: Find a cubic function f (x) = ax3 +bx2 +cx+d that has a local maximum value of 3 ... Calculus help: Find a cubic function f (x) = ax3 +bx2 +cx+d that has a local maximum value of 3 ...
Video: Chemical Synapse Animation

For a complete list of videos, visit our video library