« previous next »

Author Question: Which was a contribution to astronomy made by Copernicus? A) The planets move around the Sun in ... (Read 54 times)

Wadzanai

  • Hero Member
  • *****
  • Posts: 528
on: Jul 27, 2018
Which was a contribution to astronomy made by Copernicus?
 
  A) The planets move around the Sun in elliptical orbits.
  B) His theory of gravity accounted for the variable speeds of the planets.
  C) He laid out the order and relative motion of the known solar system.
  D) He discovered the Sun was not at the center of the Milky Way.
  E) His telescope revealed the four moons of Jupiter, a model solar system.

Question 2

What is the absolute magnitude of our Sun?
 
  A) -23.0
  B) -4.6
  C) -1.4
  D) +4.8
  E) +9.4


Swizqar

  • Sr. Member
  • ****
  • Posts: 357
Reply #1 on: Jul 27, 2018
Answer to Question 1

C

Answer to Question 2

D


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

More than one-third of adult Americans are obese. Diseases that kill the largest number of people annually, such as heart disease, cancer, diabetes, stroke, and hypertension, can be attributed to diet.

Did you know?

Cutaneous mucormycosis is a rare fungal infection that has been fatal in at least 29% of cases, and in as many as 83% of cases, depending on the patient's health prior to infection. It has occurred often after natural disasters such as tornados, and early treatment is essential.

Did you know?

There are more nerve cells in one human brain than there are stars in the Milky Way.

Did you know?

In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

Did you know?

Children of people with alcoholism are more inclined to drink alcohol or use hard drugs. In fact, they are 400 times more likely to use hard drugs than those who do not have a family history of alcohol addiction.

A purse made from a cane toad. A purse made from a cane toad.
Pupil Assessment, Move Penlight directly in Front of Pupil Pupil Assessment, Move Penlight directly in Front of Pupil
A Star with Three Planets A Star with Three Planets
The nucleic acids DNA and RNA are made from chains of nucleotides. The nucleic acids DNA and RNA are made from chains of nucleotides.
With your fingertips, using medium pressure, trace the colon over the abdomen. Move in clockwise ... With your fingertips, using medium pressure, trace the colon over the abdomen. Move in clockwise ...
Have you wondered what Nutella made of! Have you wondered what Nutella made of!
Video: Role of transport in a cell

For a complete list of videos, visit our video library