It has long been thought that the universe is spatially symmetric with respect to its fundamental physical properties. Cosmologists relying on data from different regions of the sky (collected from different hemispheres or during different seasons) have always arrived at similar conclusions about the general features of the universe. But new research indicates the universe might not be so symmetric after all.
There are some things everyone knows about the future: there will be flying cars, disease will be a thing of the past and there will be regular shuttles to Mars. Unfortunately, in this context, “the future” isn’t well defined. For many people living in the 1970’s, the year 2010 was “the future,” but for us, 2010 seems a lot more like “the present.” So, frustratingly, having arrived at 2010, we still have to wait for a lunar vacation.
A recent article in Scientific American laments, “10 Science Letdowns of the New Millenium.” Some disappointments are technological: there are no flying cars, no regular flights to Mars, and no sources of unlimited, cheap energy. Others concern failures in research: there is no cure for cancer, no vaccine for aids, and the intricate workings of the brain still baffle our best scientists. Still other failures Continue reading “No Flying Cars by 2010?!”