Cyber Tooth Tiger asked 3/5/2015 Do you ever go outside and look at the clouds on a bright sunny day and think to yourself have them clouds have been the same ones all over the entire world?
Alexandra Leever asked 9/26/2016 Do you believe in life in the universe? Go to my survey to answer! https://www.surveymonkey.com/r/6QSF9FW
Pravin Kale asked 5/4/2016 why to carry out moon / mars missions ? there is no water oxygen atmosphere ? to bring minerals from there is not viable
Jesses Girl asked 3/13/2015 Which main-sequence stars are the most massive? A: red B: orange C: yellow D: blue
Anonymous asked 5/5/2016 what is the method of measuring the distance of star/planet /galaxy which are thousands light years away from us ? what is the accuracy?