Imagine waking up one morning to the news: a black hole is drifting close to our solar system. It sounds like the plot of a .

We measure the extremely long distances between things in space by light years. A light year is the distance that light travels in one Earth year. Light travels at about 300,000 kilometres per second.

After a more challenging start to the year, a few astrological signs can rest assured knowing that the rest of the year will ...