This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: The Milky Way Galaxy's galaxy type is SBb. Indicate whether the statement is true or ... (Read 77 times)

notis

  • Hero Member
  • *****
  • Posts: 596
on: Jul 27, 2018
The Milky Way Galaxy's galaxy type is SBb.
 
  Indicate whether the statement is true or false

Question 2

If we detected an Earth-like planet in the habitable zone around another star, describe how we might learn whether it contained life.
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

lauravaras

  • Sr. Member
  • ****
  • Posts: 347
Reply #1 on: Jul 27, 2018
Answer to Question 1

TRUE

Answer to Question 2

Future technology (large space-based interferometers) will be able to measure the far-infrared spectrum of the planet's atmosphere. Ozone produces a strong feature in the Earth's atmosphere and would be detectable in the hypothetical extrasolar planet with the planned space interferometer. Ozone is related to oxygen, which is highly reactive, and would rapidly disappear (through oxidation) from the atmosphere were it not being constantly replenished. Converting oxides back to oxygen requires energy and is not a chemical reaction that would spontaneously occur otherwise. In the Earth's case, the energy comes from the sun via photosynthesis in plants and the detection of ozone near another planet would therefore be a strong indicator of life.


notis

  • Member
  • Posts: 596
Reply 2 on: Jul 27, 2018
Excellent

atrochim

  • Member
  • Posts: 331
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.

Did you know?

Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).

Did you know?

Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.

Did you know?

The training of an anesthesiologist typically requires four years of college, 4 years of medical school, 1 year of internship, and 3 years of residency.

Did you know?

Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.

True Forget-Me-Not True Forget-Me-Not
A typical injector-pump-type automotive diesel fuel injection system. A typical injector-pump-type automotive diesel fuel injection system.
A radiator may be either a down-flow or a cross-flow type. A radiator may be either a down-flow or a cross-flow type.
Patient diagnosed with type 2 diabetes mellitus. Periodontal examination revealed deep periodontal ... Patient diagnosed with type 2 diabetes mellitus. Periodontal examination revealed deep periodontal ...
Chylomicron Chylomicrons are one type of lipoprotein Chylomicron Chylomicrons are one type of lipoprotein
Bar-eye phenotypes in contrast to the wild-type eye in Drosophila Bar-eye phenotypes in contrast to the wild-type eye in Drosophila
Video: Structures that affect circulation - arterioles and vasomotor responses and venous return

For a complete list of videos, visit our video library