The inner solar system spins much more slowly than it should. Now, scientists may know why.

Alternative to Silicon: Why Perovskites Could Take Solar Cells to New Heights

'Canyon of Fire' Solar Storm Headed Our Way, But There's No Need to Panic

Earth Is Safe. The Planets (And Pluto) Won’t Change Orbits And Cause Havoc For At Least 100,000 Years, Say Scientists