« previous next »

Author Question: What extrasolar planet discoveries were initially surprising? A) Jupiter-like planets orbiting ... (Read 76 times)

Mr3Hunna

  • Hero Member
  • *****
  • Posts: 536
on: Jul 27, 2018
What extrasolar planet discoveries were initially surprising?
 
  A) Jupiter-like planets orbiting very close to their stars
  B) planets with large eccentricities
  C) systems with only one planet
  D) A and B
  E) A and C
  F) B and C

Question 2

What is a protostar?
 
  A) a star that is still in the process of forming B) an intermediate-mass star
  C) a star that has planets D) a star in its final stage of life


nguyenhoanhat

  • Sr. Member
  • ****
  • Posts: 332
Reply #1 on: Jul 27, 2018
Answer to Question 1

D

Answer to Question 2

A


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

Mr3Hunna

  • Hero Member
  • *****
  • Posts: 536
Reply #2 on: Jul 27, 2018
Thank you!


nguyenhoanhat

  • Sr. Member
  • ****
  • Posts: 332
Reply #3 on: Jul 27, 2018
Always glad to help...


« previous next »
 

Did you know?

The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.

Did you know?

There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.

Did you know?

Hypertension is a silent killer because it is deadly and has no significant early symptoms. The danger from hypertension is the extra load on the heart, which can lead to hypertensive heart disease and kidney damage. This occurs without any major symptoms until the high blood pressure becomes extreme. Regular blood pressure checks are an important method of catching hypertension before it can kill you.

Did you know?

Elderly adults are at greatest risk of stroke and myocardial infarction and have the most to gain from prophylaxis. Patients ages 60 to 80 years with blood pressures above 160/90 mm Hg should benefit from antihypertensive treatment.

Did you know?

Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.

A Star with Three Planets A Star with Three Planets
Cutaways of Jupiter and Saturn Cutaways of Jupiter and Saturn
The Magnetic Fields of Five Planets The Magnetic Fields of Five Planets
Planet George Planet George
Earth scientists have devised a scheme to divide the planet’s natural history into distinct time ... Earth scientists have devised a scheme to divide the planet’s natural history into distinct time ...
A Changing Planet — 1e A Changing Planet — 1e
Video: Chemical Changes

For a complete list of videos, visit our video library