When the Sun dies, it will become what we call a white dwarf. White dwarfs are small and incredibly dense – a teaspoon of white…View More What will happen to our Solar System after the Sun dies?
Exploring Mars is tough. Robotic emissaries have been crawling over the planet’s surface for years, but they move slowly. Flying may be the next stage…View More Floating in the Atmosphere: Sailplanes on Mars