Top 10 Strangest Things in Space
There are a lot of strange things in space. We highlight the top ten strangest things found in space – including dark matter, exoplanets, galactic cannibalism and quasars – at SPACE.com.
Dark matter: How does it explain a star's speed? - Don Lincoln
All the stars in a spiral galaxy rotate around a center -- but to astronomers, the speed that each star travels wasn't making sense. Why didn't stars slow down toward the edges as expected? Don Lincoln explains how a mysterious force called dark matter is (possibly) the answer -- and why the search
Transformer. After nanocrystals use sunlight’s energy to split water molecules into oxygen and hydrogen, a nickel catalyst snags electrons from the oxygen and uses them to knit hydrogen molecules together—making hydrogen fuel. Credit: Ted Pawlicki/University of Rochester