The Galactic Year is the time for our solar system to orbit the Galaxy; it is about:

The Galactic Year is the time for our solar system to orbit the Galaxy; it is about:

A) 15 million years.
B) 225 million years.
C) 4.5 billion years.
D) 9.6 billion years.
E) 13.5 billion years.

Question 2

In addition to the asteroid belt, some meteorites come from the Moon and even Mars.

Indicate whether the statement is true or false

Question 3

Most of the deuterium that formed right after the Big Bang:

A) is still around today.
B) broke down into electrons and neutrons.
C) turned into dark matter.
D) quickly burned into helium nuclei.
E) was found in the globular clusters.

Question 4

The polar caps and dust storms of Mars can be seen with Earth-based amateur telescopes.

Indicate whether the statement is true or false

Question 5

Why do asteroids and comets differ in composition?

A) Asteroids formed inside the frost line, while comets formed outside.
B) Asteroids and comets formed at different times.
C) Comets formed from the jovian nebula, while asteroids did not.
D) Comets are much larger than asteroids.
E) Asteroids are much larger than comets.

Home Search Q & A Board Gallery Resource Library Blog Dictionary Chat	Quick Links Start a Topic Latest Topics Unanswered Questions Courses Study Tools Browse by Textbook	Social Facebook YouTube Community Stats Who's Online Trending Staff	Help About Us Take the Tour Study Tips Posting Guidelines Terms and Policies Contact Us
Biology Forums - Study Force © 2010-2024 \| Powered by SMF \| SMF © 2015, Simple Machines \| Sitemap Biology-Forums.com is not affiliated with any publisher. Book covers, title and author names appear for reference only.

The Galactic Year is the time for our solar system to orbit the Galaxy; it is about:

Related Topics