1)   Anyone seeking ......... of life on Mars is likely to be disappointed.

2)   Scientists have been ......... through data from an orbiting satellite.

3)   It seems that Mars has always been cold and icy and that it's not true that oceans have ......... on the planet in its early history.

4)   This ......... in the life on Mars argument comes just when it is closest to Earth in 60.000 years.

5)   Because it is coming so close observers are hoping to settle the argument about life on the planet once and for ..........

6)   A spacecraft is heading for the planet with a device that will ......... into the soil to sniff for proof of any life.

7)   Researchers are also looking into the possibility of one day launching a manned ......... to Mars.

8)   As the planet gets nearer to the Sun, enormous dust storms can be whipped ..........

9)   Unfortunately the dust storms tend to ......... the view of the planet.

10)   Everyone hopes that Mars will remain dust free otherwise people will only be able to see an orange ..........