« previous next »

Author Question: Binary (double) stars can be detected by a. being seen as two separate stars with a telescope. ... (Read 94 times)

ereecah

  • Hero Member
  • *****
  • Posts: 530
on: Jul 27, 2018
Binary (double) stars can be detected by
 
  a. being seen as two separate stars with a telescope.
  b. one star traveling a wiggly proper-motion path across the sky.
  c. one star dimming abruptly as another passes in front of it.
  d. pairs of absorption lines seen in the spectrum of what appears to be one star.
  e. All of the other choices are correct.

Question 2

Which blurs our Earth-based view of celestial objects?
 
  a. the Sun
  b. the Moon
  c. Earth's atmosphere


kishoreddi

  • Sr. Member
  • ****
  • Posts: 329
    • Your online Help in Biology and chemistry
Reply #1 on: Jul 27, 2018
Answer to Question 1

e

Answer to Question 2

c


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

ereecah

  • Hero Member
  • *****
  • Posts: 530
Reply #2 on: Jul 27, 2018
Both answers were spot on, thank you once again


kishoreddi

  • Sr. Member
  • ****
  • Posts: 329
    • Your online Help in Biology and chemistry
Reply #3 on: Jul 27, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

Asthma-like symptoms were first recorded about 3,500 years ago in Egypt. The first manuscript specifically written about asthma was in the year 1190, describing a condition characterized by sudden breathlessness. The treatments listed in this manuscript include chicken soup, herbs, and sexual abstinence.

Did you know?

Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.

Did you know?

As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.

Did you know?

Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.

Did you know?

Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.

Three bonds separate sequential α carbons in a polypeptide chain Three bonds separate sequential α carbons in a polypeptide chain
Essentials of a Refracting Telescope Essentials of a Refracting Telescope
Stars and the Interstellar Medium Stars and the Interstellar Medium
Radio Telescope Used for SETI Radio Telescope Used for SETI
SBTRKT - Look at Stars Ft. Sampha SBTRKT - Look at Stars Ft. Sampha
Heavy fuel droplets separate as they flow around an abrupt bend in an intake manifold. Heavy fuel droplets separate as they flow around an abrupt bend in an intake manifold.
Video: Regulation of GFR: autoregulation via tubuloglomerular feedback, neural & hormonal regulation

For a complete list of videos, visit our video library