« previous next »

Author Question: A galaxy is: a. a thin cloud from which a sun and planets can form. b. a large diffuse cloud of ... (Read 22 times)

Redwolflake15

  • Hero Member
  • *****
  • Posts: 569
on: Aug 22, 2018
A galaxy is:
 a. a thin cloud from which a sun and planets can form.
 b. a large diffuse cloud of gas.
 c. what forms in the center of a cloudlike sphere of gases that flattens and condenses.
 d. a huge rotating aggregation of stars, gas, and other debris held together by gravity.

Question 2

Extrasolar planets, those planets that are outside our solar system:
 a. have not yet been discovered.
 b. are being discovered regularly.
 c. are certainly not at all like Earth.
 d. do not exist.


fwbard

  • Sr. Member
  • ****
  • Posts: 325
Reply #1 on: Aug 22, 2018
Answer to Question 1

d

Answer to Question 2

b


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

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?

When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

Did you know?

About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.

Did you know?

Excessive alcohol use costs the country approximately $235 billion every year.

Did you know?

In inpatient settings, adverse drug events account for an estimated one in three of all hospital adverse events. They affect approximately 2 million hospital stays every year, and prolong hospital stays by between one and five days.

Aerial and close-up views of a large biodiversity experiment in Cedar Creek, Minnesota. Each of the Aerial and close-up views of a large biodiversity experiment in Cedar Creek, Minnesota. Each of the
Frederick Douglass, having escaped from slavery in 1836, attracted large audiences as an antislavery Frederick Douglass, having escaped from slavery in 1836, attracted large audiences as an antislavery
Carbohydrates: The combining of the monosaccharides glucose and fructose to form the disaccharide ... Carbohydrates: The combining of the monosaccharides glucose and fructose to form the disaccharide ...
A typical large tool box, showing just one of many drawers. A typical large tool box, showing just one of many drawers.
You heat 3.952 g of a mixture of Fe3O4 and FeO to form 4.162 g Fe2O3. The mass of oxygen ... You heat 3.952 g of a mixture of Fe3O4 and FeO to form 4.162 g Fe2O3. The mass of oxygen ...
Video: The pH scale - Strong acids and Weak acids

For a complete list of videos, visit our video library