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

Author Question: During the T-Tauri phase of a protostar, it A) begins a period of reduced activity. B) expands ... (Read 26 times)

skymedlock

  • Hero Member
  • *****
  • Posts: 561
on: Jul 27, 2018
During the T-Tauri phase of a protostar, it
 
  A) begins a period of reduced activity.
  B) expands dramatically.
  C) may develop very strong winds.
  D) lies on the main sequence.
  E) changes its spin direction.

Question 2

Why were Type I supernovae so critical in discovering dark energy?
 
  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

ynlevi

  • Sr. Member
  • ****
  • Posts: 338
Reply #1 on: Jul 27, 2018
Answer to Question 1

C

Answer to Question 2

These brilliant explosions are consistent standard candles, visible out to billions of light-years. Instead of finding the most distant galaxies slowing down as expected in a closed universe, the supernovae were even more distant than expected, as dark energy kept the universe forever expanding.


skymedlock

  • Member
  • Posts: 561
Reply 2 on: Jul 27, 2018
Gracias!

ASDFGJLO

  • Member
  • Posts: 335
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.

Did you know?

Amphetamine poisoning can cause intravascular coagulation, circulatory collapse, rhabdomyolysis, ischemic colitis, acute psychosis, hyperthermia, respiratory distress syndrome, and pericarditis.

Did you know?

Blastomycosis is often misdiagnosed, resulting in tragic outcomes. It is caused by a fungus living in moist soil, in wooded areas of the United States and Canada. If inhaled, the fungus can cause mild breathing problems that may worsen and cause serious illness and even death.

Did you know?

The Food and Drug Administration has approved Risperdal, an adult antipsychotic drug, for the symptomatic treatment of irritability in children and adolescents with autism. The approval is the first for the use of a drug to treat behaviors associated with autism in children. These behaviors are included under the general heading of irritability and include aggression, deliberate self-injury, and temper tantrums.

Did you know?

Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.

Use of an animal cap assay to demonstrate morphogen activity in conditional specification. Use of an animal cap assay to demonstrate morphogen activity in conditional specification.
Brain activity varies by culture Brain activity varies by culture
Summary of Cytokine Activity Summary of Cytokine Activity
Human activity has released carbon from sequestration in long-term reservoirs Human activity has released carbon from sequestration in long-term reservoirs
Fetal Period Fetal Period
Daily Alertness Activity Daily Alertness Activity
Video: Stroke volume - contractility definition

For a complete list of videos, visit our video library