This week Earth ploughs through the debris stream that has been left in space from the tail of comet Tempel-Tuttle, and that means meteors. The Leonid meteor shower is so-called because all of the shooting stars associated with it appear to originate from a point just below the head of Leo, the lion. The meteors fly in all directions from this point, and at their peak are expected to produce about 10-20 bright meteors an hour. The chart shows the view looking east from London at midnight as 17 November becomes 18 November. Leo has risen but is still quite low, meaning that some meteors will not be seen as they will head below the horizon. The later you can stay up, the more rewards you should see, as Leo rises higher in the sky. In the southern hemisphere observers require more patience as Leo rises later in the night and can be found close to the horizon in the north-east.