NASA warned the three astronauts inside about one hour before the object was to reach the area of the station.

VOA: special.2009.04.01

At the end of the test flight,the speed of the Apollo spacecraft was increased to forty thousand kilometers an hour.

VOA: special.2009.07.08

At least nineteen of the fifty American states are planning to take part in the two thousand ten Earth Hour observance.

VOA: special.2010.03.22

The study found that the patients' risk of suffering a fall was higher for up to one hour after emotional stress.

VOA: special.2009.03.24

He says every extra hour of television meant an eight percent increase in the chances of developing signs of depression.

VOA: special.2009.03.10

But about an hour south of Miami lies a natural wilderness different from anywhere else in the United States.

VOA: special.2009.06.30

The findings suggest that even a half-hour walk at a quick speed every day could lower the risk of cognitive impairment.

VOA: special.2011.07.27

Most of them bring cars. It can take more than one hour to drive from the ferry to the center of town.

VOA: special.2009.06.01

The most severe tornadoes can reach wind speeds of three hundred twenty kilometers an hour or more.

VOA: special.2010.05.11

After about an hour of being beyond the pull of Earth's gravity, Glenn reported he felt fine.

VOA: special.2009.06.17

But word leaked out that it was to take place in the town of Rhinebeck, about a two-hour drive from New York City.

VOA: special.2010.08.09

The Anderson reported winds of about one hundred forty kilometers an hour and waves ten meters high.

VOA: special.2009.11.11

So now,people can go to the Curbside Cupcakes Web site and find out where the truck will be at each hour of the day.

VOA: special.2010.04.12

In less than an hour, the Indians killed the general and every one of his men.

VOA: special.2010.04.08