Author Question: Smooth rolling plains, modest highlands and lowlands, and no water describes the surface of ... (Read 35 times)

ts19998

  • Hero Member
  • *****
  • Posts: 531
Smooth rolling plains, modest highlands and lowlands, and no water describes the surface of ________.
 
  Fill in the blank(s) with correct word

Question 2

Given that white dwarf supernovae are such good standard candles, why don't we use them to measure the distance to all galaxies?
 
  A) They are rare events, so we have observed them in only a tiny fraction of all galaxies.
  B) They can occur only in spiral galaxies, not elliptical galaxies.
  C) We would, but we don't have enough telescopes.
  D) We cannot see them beyond a distance of about 100 million light-years.



harveenkau8139

  • Sr. Member
  • ****
  • Posts: 304
Answer to Question 1

Venus

Answer to Question 2

A



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Pregnant women usually experience a heightened sense of smell beginning late in the first trimester. Some experts call this the body's way of protecting a pregnant woman from foods that are unsafe for the fetus.

Did you know?

About 100 new prescription or over-the-counter drugs come into the U.S. market every year.

Did you know?

Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.

Did you know?

The eye muscles are the most active muscles in the whole body. The external muscles that move the eyes are the strongest muscles in the human body for the job they have to do. They are 100 times more powerful than they need to be.

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.

For a complete list of videos, visit our video library