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

Author Question: Collisions between galaxies are thought to A) be commonplace. B) have stopped about 5 billion ... (Read 73 times)

cdr_15

  • Hero Member
  • *****
  • Posts: 546
on: Jul 27, 2018
Collisions between galaxies are thought to
 
  A) be commonplace.
  B) have stopped about 5 billion years ago.
  C) be extremely rare.
  D) have never occurred.
  E) have only occurred between 10 and 15 billion years ago.

Question 2

What is the current limit to distances we can measure via parallax, until the results of the new Gaia mission become available?
 
  A) about 100 light years B) about 1000 light years
  C) about 100,000 light years D) about 10,000 light years


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

scikid

  • Sr. Member
  • ****
  • Posts: 300
Reply #1 on: Jul 27, 2018
Answer to Question 1

A

Answer to Question 2

B


cdr_15

  • Hero Member
  • *****
  • Posts: 546
Reply #2 on: Jul 27, 2018
Thanks


scikid

  • Sr. Member
  • ****
  • Posts: 300
Reply #3 on: Jul 27, 2018
Welcome :)


« previous next »
 

Did you know?

Many medications that are used to treat infertility are injected subcutaneously. This is easy to do using the anterior abdomen as the site of injection but avoiding the area directly around the belly button.

Did you know?

There are 60,000 miles of blood vessels in every adult human.

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?

Automated pill dispensing systems have alarms to alert patients when the correct dosing time has arrived. Most systems work with many varieties of medications, so patients who are taking a variety of drugs can still be in control of their dose regimen.

Did you know?

Most strokes are caused when blood clots move to a blood vessel in the brain and block blood flow to that area. Thrombolytic therapy can be used to dissolve the clot quickly. If given within 3 hours of the first stroke symptoms, this therapy can help limit stroke damage and disability.

Possible Earth 5 billion years from now Possible Earth 5 billion years from now
Thought this was pretty funny... Thought this was pretty funny...
Spiral Galaxies Seen Nearly Edge On from the Milky Way Spiral Galaxies Seen Nearly Edge On from the Milky Way
Frederic Edwin Church conveyed the romantic sensibility in Twilight in the Wilderness (1860). The cl Frederic Edwin Church conveyed the romantic sensibility in Twilight in the Wilderness (1860). The cl
A) Butterfly-shaped lupus rash. Lupus is the Latin word for wolf; the face rash was thought to look ... A) Butterfly-shaped lupus rash. Lupus is the Latin word for wolf; the face rash was thought to look ...
Polar Bear Thought Suppression Polar Bear Thought Suppression
Video: Secretin (inhibiting gastric acid secretion), Cholecystokinin (fat digestion) & Cholecystokinin

For a complete list of videos, visit our video library