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

Author Question: What did Galileo discover when looking at the Sun with his telescope, and how did this support ... (Read 86 times)

rl

  • Hero Member
  • *****
  • Posts: 579
on: Jul 27, 2018
What did Galileo discover when looking at the Sun with his telescope, and how did this support Copernicus?
 
  What will be an ideal response?

Question 2

Why were the mass and density of Pluto unknown until Charon was found?
 
  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

dellikani2015

  • Sr. Member
  • ****
  • Posts: 332
Reply #1 on: Jul 27, 2018
Answer to Question 1

Sunspots, which rotated across the Sun's face, showing that the Sun was not perfect and it (and Earth) could rotate on its axis.

Answer to Question 2

Pluto is so distant that its disk was not resolved well, and it had no discernable gravitational influence on Uranus and Neptune (Lowell's prediction was just luck). But Charon's orbit let us find the mass of both objects, and the series of eclipses allowed us to calculate the sizes of both bodies with great accuracy.


rl

  • Member
  • Posts: 579
Reply 2 on: Jul 27, 2018
YES! Correct, THANKS for helping me on my review

alexanderhamilton

  • Member
  • Posts: 334
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.

Did you know?

Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.

Did you know?

During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.

Did you know?

Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.

Did you know?

Critical care patients are twice as likely to receive the wrong medication. Of these errors, 20% are life-threatening, and 42% require additional life-sustaining treatments.

Coral reefs, such as this one in the Red Sea, support some of the most diverse assemblages of organi Coral reefs, such as this one in the Red Sea, support some of the most diverse assemblages of organi
Spitzer Telescope Picture of a galaxy Spitzer Telescope Picture of a galaxy
Effect of clinical decison support systems Effect of clinical decison support systems
Testing Whether Therapy has Empirical Support Testing Whether Therapy has Empirical Support
Refracting Telescope Refracting Telescope
Telescope Telescope
Video: Cognitive development by Piaget (Preoperational stage or intelligence)

For a complete list of videos, visit our video library