« previous next »

Author Question: Describe two ways of detecting extrasolar planets. What will be an ideal ... (Read 31 times)

natalie2426

  • Hero Member
  • *****
  • Posts: 524
on: Jul 27, 2018
Describe two ways of detecting extrasolar planets.
 
  What will be an ideal response?

Question 2

Describe some of the results from the Cassini/Huygens mission to Saturn and its moons.
 
  What will be an ideal response?


shayla

  • Sr. Member
  • ****
  • Posts: 323
Reply #1 on: Jul 27, 2018
Answer to Question 1

Most are found by their gravity pulling their stars enough to create observed Doppler shifts as the planets orbit their stars. A few have also been seen to transit the disks of their stars, with drops in the star's light seen in photometers.

Answer to Question 2

Cassini has found a surprisingly active geology on many Saturn moons, e.g. Enceladus. The Huygens probe landed on Titan and photographed hills, valleys, and possibly rivers. It showed pictures of ice rocks on the surface of the planet and its soft landing suggested a slushy ice/rock surface. Radar mapping of Titan showed what appear to be lakes of liquid methane and ethane and Cassini has also photographed Saturn's rings and the gap moons in great detail.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

The U.S. Preventive Services Task Force recommends that all women age 65 years of age or older should be screened with bone densitometry.

Did you know?

It is difficult to obtain enough calcium without consuming milk or other dairy foods.

Did you know?

Historic treatments for rheumatoid arthritis have included gold salts, acupuncture, a diet consisting of apples or rhubarb, nutmeg, nettles, bee venom, bracelets made of copper, prayer, rest, tooth extractions, fasting, honey, vitamins, insulin, snow collected on Christmas, magnets, and electric convulsion therapy.

Did you know?

Elderly adults are at greatest risk of stroke and myocardial infarction and have the most to gain from prophylaxis. Patients ages 60 to 80 years with blood pressures above 160/90 mm Hg should benefit from antihypertensive treatment.

Did you know?

About 80% of major fungal systemic infections are due to Candida albicans. Another form, Candida peritonitis, occurs most often in postoperative patients. A rare disease, Candida meningitis, may follow leukemia, kidney transplant, other immunosuppressed factors, or when suffering from Candida septicemia.

Two equivalent ways of drawing a phylogeny Two equivalent ways of drawing a phylogeny
Dwarf Planets Dwarf Planets
Four ways to visualize protein structure Four ways to visualize protein structure
How to describe transformations of a sinusoidal function (y=a*sin⁡b(x−c)+d) How to describe transformations of a sinusoidal function (y=a*sin⁡b(x−c)+d)
Relative Sizes of Dwarf Planets and Earth Relative Sizes of Dwarf Planets and Earth
Three ways by which chromatin remodelers Three ways by which chromatin remodelers
Video: Natural Selection, Species Isolation and Real World Example

For a complete list of videos, visit our video library