1, NASA discovered a mathematical error in its calculations.

2, NASA is hedging its bets and adopting both strategies.

3, NASA has started a 10-year search for extraterrestrial intelligence.

4, A hydrogen leak forced NASA to ground the space shuttle.

5, The programme will be jointly run with NASA in the US.

6, NASA plans to launch a satellite to study cosmic rays.

7, The news was a bitter disappointment to NASA employees.

8, After the accident, NASA conducted an internal investigation.

9, The odds against radioactive contamination, Nasa told the court, are 2,500 to 1.

10, One of the big cheeses from NASA gave a speech.

11, The mission is a joint effort of NASA and the European Space Agency.

12, The project is a NASA scheme to rouse interest in science and space.

13, NASA has stopped the countdown for the space shuttle mission because of technical problems.

14, NASA is studying ways to help astronauts readjust to life on Earth.

15, NASA has used the space shuttle to study how materials perform in a weightless environment.

16, Knowing NASA would have little cash to spare,[http://sentencedict.com/nasa.html] the committee backed off proposals for new landing craft.

17, As a consultant to NASA, Cockburn had access to confidential details of the US space program.

18, The ban on local sale of newsprint to Nasa Borba makes it necessary to import it from abroad at steep prices.

19, NASA officials found a way to work around the technical glitch on the Galileo spacecraft.

20, NASA said the accident was a result of human error.

21, NASA will try to launch the space shuttle again on Sunday.

22, NASA continues its efforts to communicate with intelligent beings in outer space.

23, It is not the first time that NASA has had trouble with the upper stage.

24, NASA has announced plans for a new space mission to Mars.

25, If it isn't, NASA could pay a stiff price.

26, NASA now hosts an Astrobiology Institute.

27, His involvement with the project began when he was on secondment from NASA to the European Space Agency.

28, After months of trouble on just about all fronts , NASA officials were delighted to have such a smooth flight.

29, Brooks's original idea has now evolved into an official NASA program.

30, But on stage I find it difficult to change the tone quickly - you've got NASA sitting in front of you!