Author Question: From studies of the masses of individual galaxies and the masses of clusters of galaxies, it is now ... (Read 23 times)

Cooldude101

  • Hero Member
  • *****
  • Posts: 557
From studies of the masses of individual galaxies and the masses of clusters of galaxies, it is now apparent that up to ________ of the universe is composed of dark matter.
 
  Fill in the blank(s) with correct word

Question 2

Kepler deduced his laws of planetary motion once Newton had published his universal law of gravitation.
 
  Indicate whether the statement is true or false



nyrave

  • Sr. Member
  • ****
  • Posts: 344
Answer to Question 1

90

Answer to Question 2

FALSE



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.

Did you know?

Though methadone is often used to treat dependency on other opioids, the drug itself can be abused. Crushing or snorting methadone can achieve the opiate "rush" desired by addicts. Improper use such as these can lead to a dangerous dependency on methadone. This drug now accounts for nearly one-third of opioid-related deaths.

Did you know?

In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.

Did you know?

Illicit drug use costs the United States approximately $181 billion every year.

Did you know?

Certain rare plants containing cyanide include apricot pits and a type of potato called cassava. Fortunately, only chronic or massive ingestion of any of these plants can lead to serious poisoning.

For a complete list of videos, visit our video library