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Science-Related Homework Help Astronomy Topic started by: kq on Mar 19, 2018



Title: LMC X-3 is a binary system that is believed to contain a black hole.
Post by: kq on Mar 19, 2018
LMC X-3 is a binary system that is believed to contain a black hole.
 
  a. True
  b. False
  Indicate whether the statement is true or false

Question 2

What are some new techniques and technologies that enable construction of optical telescopes with very large mirrors?
 
  What will be an ideal response?

Question 3

Stellar parallax is used to measure distances of celestial bodies within the solar system.
 
  a. True
  b. False
  Indicate whether the statement is true or false


Title: LMC X-3 is a binary system that is believed to contain a black hole.
Post by: Azhan on Mar 19, 2018
Answer to q. 1

TRUE

Answer to q. 2

Constructing large-mirror optical telescopes with thin, or floppy, mirrors has made the process much more feasible. Thin mirrors are lightweight and so do not require massive support structures. Some large mirrors are cast in a rotating oven that causes the molten glass to flow to form a concave upper surface, so grinding and polishing the mirror is relatively fast. Mirrors can also be made of segments, which are economical because each segment can be made separately. For both floppy and segmented mirrors, active optics, computer-driven thrusters behind the mirrors, is used to control their optical shapes.

Answer to q. 3

FALSE


Title: LMC X-3 is a binary system that is believed to contain a black hole.
Post by: kq on Mar 19, 2018
I'm seriously surprised that you found the answers... What's your secret?!