« previous next »

Author Question: The Kepler mission searches for Earth-like planets by looking for the dip in the brightness of a ... (Read 79 times)

rmenurse

  • Hero Member
  • *****
  • Posts: 513
on: Jul 27, 2018
The Kepler mission searches for Earth-like planets by looking for the dip in the brightness of a star as such a planet transited across it. Why does this technique actually miss the vast majority of planets?
 
  What will be an ideal response?

Question 2

Galileo challenged the idea that objects in the heavens were perfect by
 
  A) showing that heavy objects fall at the same rate as lighter objects.
  B) observing sunspots on the Sun and mountains on the Moon.
  C) proving Kepler's laws were correct.
  D) inventing the telescope.


bubulittle310@msn.cn

  • Sr. Member
  • ****
  • Posts: 281
Reply #1 on: Jul 27, 2018
Answer to Question 1

By searching for transits, Kepler can only detect those planets with orbits that cross our line of sight to the star. This means the orbit must be very close to edge-on. Because planetary systems around other stars will have a random orientation to us, most planets will not cross our line of sight and cause a dip in the star's brightness. Therefore, Kepler will miss the vast majority of planetary systems. Nevertheless, this is the best method of detection using current technology.

Answer to Question 2

B


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

rmenurse

  • Hero Member
  • *****
  • Posts: 513
Reply #2 on: Jul 27, 2018
TY


bubulittle310@msn.cn

  • Sr. Member
  • ****
  • Posts: 281
Reply #3 on: Jul 27, 2018
You're welcome


« previous next »
 

Did you know?

More than 30% of American adults, and about 12% of children utilize health care approaches that were developed outside of conventional medicine.

Did you know?

For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

Did you know?

When intravenous medications are involved in adverse drug events, their harmful effects may occur more rapidly, and be more severe than errors with oral medications. This is due to the direct administration into the bloodstream.

Did you know?

According to the CDC, approximately 31.7% of the U.S. population has high low-density lipoprotein (LDL) or "bad cholesterol" levels.

Did you know?

Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.

Changes in Earth's atmospheric carbon dioxide levels over geological time. Changes in Earth's atmospheric carbon dioxide levels over geological time.
Rivers on Mars and Earth Rivers on Mars and Earth
Earth emits radiation back out to space from all surfaces, both day and night Earth emits radiation back out to space from all surfaces, both day and night
Formation of the Early Earth Formation of the Early Earth
Astronaut Rachel leaves Earth in a spaceship at a speed of 0.960c relative to an observer on ... Astronaut Rachel leaves Earth in a spaceship at a speed of 0.960c relative to an observer on ...
Crewed mission spacecraft Crewed mission spacecraft
Video: Power Supply Polyacrylamide Gel Protein Sample

For a complete list of videos, visit our video library