This cartoon by Morten Morland from The Times mixes news two stories: the ongoing horsemeat scandal and the meteor which exploded over Russia on Friday injuring 1,200 people.
In the cartoon, a meteor has landed on a supermarket. In fact, it's a 'meateor' composed of horsemeat rather than the usual dust and rock (note the change in spelling!).
The destruction of the supermarket is a metaphor for the disastrous effect which the horsemeat scandal has had on the reputation of the food industry (not to mention sales of frozen lasagne and burgers). British supermarkets, including Tesco and Wal-Mart's Asda, have all recalled products sold as beef containing horse DNA.
Blower uses a similar idea for his cartoon in The Telegraph.
According to Wikipedia, a meteor is the visible streak of light from a meteoroid, heated as it enters a planet's atmosphere, and the glowing particles that it sheds in its wake, colloquially called a "shooting star" or "falling star".