Ray Dart asked 6/13/2015 What do you think about dark matter? Does it really exist, or has it been invented to "explain away" mathematical problems that occur when analysing gravitational effects in the "universe we know"?
Thomas H Cullen asked 9/5/2018 Does fiction oppose the original rationality, so that outer space can't look like nationalism?
Anonymous asked 9/16/2010 What seismological tools are there that sense the planets rumblings/earthquakes?