Rami reads about how astronauts appear to be weightless in space. She wonders how Earth stays in orbit around the sun when astronauts float while in orbit around Earth. She remembers that there is a force that keeps Earth in orbit around the sun. This force is the same force that keeps astronauts in orbit around the Earth. It also helps to explain why they appear to be weightless. What is this force?

Gravitational force is the force that keeps astronauts in orbit around the Earth and Earth in orbit around the Sun.

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they could have a boston tea party.

in the 1800s, locomotives powered by steam made transportation faster and cheaper. the resulting rapid growth of railroads led to the connection of the atlantic and pacific railroad in oklahoma city in 1897.

in the last years of the century, the improvement of steam-based engines the expansion and growth of railroads. this growth increased when the companies started to build and expand, such as the atlantic and pacific railroad, which connected new mexico with california, and missouri with oklahoma. many of these new networks were built in oklahoma, and these changes transportation henceforward.