Anonymous asked 3/27/2014

What is the difference between a star system, a galaxy, a cluster, and a super cluster?

Anonymous asked 2/8/2014

How can we see the dark side of the moon?

Anonymous asked 1/13/2014

Which planets have the largest accelerations of gravity?

Anonymous asked 12/28/2013

Should Pluto become a planet again?

Anonymous asked 12/27/2013

What is a planet?

Anonymous asked 12/21/2013

Does venus have an atmosphere and a magnetic field?

Anonymous asked 11/28/2013

Why is the sun important to our planet?

Anita Dweells asked 11/24/2013

Will humans ever be able to explore beyond the solar-system and build a new world?

Yo Kass asked 11/23/2013

What's the likelihood of humans colonizing Titan anytime soon?

Anonymous asked 8/15/2013

What's the interior part of the sun like?

Anonymous asked 8/13/2013

What is a shooting star actually?

Anonymous asked 6/28/2013

How much time would Earth have taken to come in its novel form after being detached from sun? Why?

Kathryn Wright asked 5/24/2013

Do you believe that we really landed on the Moon or do you think it is fake?

Sosina Micheal asked 1/2/2013

Why is mathematics hard in universities?

Anonymous asked 11/7/2011

Is An Asteroid Heading Towards Earth?

Anonymous asked 7/27/2011

How Many Earth Days Are Equal To The Universe's Longest Day?

Iren Igbere asked 4/7/2011

Why does the moon orbit earth instead of the sun?

Shujing asked 2/7/2011

Why is there no more manned moon landings since 1972?

Tony Newcastle asked 2/4/2011

Are there certain times of the year when there is no moon in the sky, at all? --When are these times; and can you sky-gazers explain this phenomenon?

Gigi Young asked 1/6/2011

1. The earth, Jupiter, Saturn, and Uranus all revolve around the sun. The earth takes 1 yr, Jupiter 12 yrs, Saturn 30 yrs, and Uranus 84 yrs to make a complete revolution. How often will Jupiter, Saturn, and Uranus have the same position in the night?