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

Author Question: The dark halo is now believed to extend at least A) 100,000 light-years. B) 50 kpc. C) 8 kpc. ... (Read 40 times)

Hungry!

  • Hero Member
  • *****
  • Posts: 1,071
on: Jul 27, 2018
The dark halo is now believed to extend at least
 
  A) 100,000 light-years.
  B) 50 kpc.
  C) 8 kpc.
  D) 15,000 light-years.
  E) 15 kpc.

Question 2

How can Betelgeuse be only half the Sun's surface temperature, yet about 10,000 times more luminous than the hotter Sun?
 
  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

lolol

  • Sr. Member
  • ****
  • Posts: 330
Reply #1 on: Jul 27, 2018
Answer to Question 1

B

Answer to Question 2

It may be cooler, but it is about 1,000 times the Sun's diameter, and has a surface area almost a million times greater than the Sun.


Hungry!

  • Member
  • Posts: 1,071
Reply 2 on: Jul 27, 2018
Thanks for the timely response, appreciate it

miss.ashley

  • Member
  • Posts: 371
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.

Did you know?

Though Candida and Aspergillus species are the most common fungal pathogens causing invasive fungal disease in the immunocompromised, infections due to previously uncommon hyaline and dematiaceous filamentous fungi are occurring more often today. Rare fungal infections, once accurately diagnosed, may require surgical debridement, immunotherapy, and newer antifungals used singly or in combination with older antifungals, on a case-by-case basis.

Did you know?

Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.

Did you know?

Bisphosphonates were first developed in the nineteenth century. They were first investigated for use in disorders of bone metabolism in the 1960s. They are now used clinically for the treatment of osteoporosis, Paget's disease, bone metastasis, multiple myeloma, and other conditions that feature bone fragility.

Did you know?

Always store hazardous household chemicals in their original containers out of reach of children. These include bleach, paint, strippers and products containing turpentine, garden chemicals, oven cleaners, fondue fuels, nail polish, and nail polish remover.

moon light moon light
The cranium of early African H. erectus KNM-ER 3733 is nearly 1.8 million years old. The cranium of early African H. erectus KNM-ER 3733 is nearly 1.8 million years old.
The Upper Cave at Zhoukoudian yields ages of about 25,000 years for Homo sapiens. The Upper Cave at Zhoukoudian yields ages of about 25,000 years for Homo sapiens.
The biochemical reactions of near-infrared light The biochemical reactions of near-infrared light
Evaluation of light touch Evaluation of light touch
Le Youth & Lane 8 - I Will Leave A Light On feat. Jyll (Sultan + Shepard Remix) Le Youth & Lane 8 - I Will Leave A Light On feat. Jyll (Sultan + Shepard Remix)
Video: Fetal Development of the Cardiovascular System

For a complete list of videos, visit our video library