Regulus, the brightest star in the constellation Leo. It is also called Alpha Leonis and Cor Leonis. Regulus has a magnitude of 1.36 and is about 84 light-years distant from the earth. In 1959 the planet Venus passed between Regulus and the earth, giving astronomers a rare opportunity to study the upper atmosphere of Venus by observing changes in the light of Regulus as it went into and out of eclipse.
Relying on a collapsed star to power our lives on Earth might seem like a good solution to our energy crisis, but there's just one tiny problem: The process might be lethal.
It's not uncommon for planets to wander alone through the universe like big, sullen teenagers. But how do they end up flying solo, and could they still harbor life?