air and water
You need rockets so you can travel to space and visit other planets. Without rockets we would know nothing about astronomy.
Space travel is done by means of rockets.
space
Rockets are almost always used in space travel. It takes the thrust of the rocket to push the satellite or capsule to it's destination. 99% of the time, a rocket is used in space travel.
They travel by rockets
Rockets are almost always used in space travel. It takes the thrust of the rocket to push the satellite or capsule to it's destination. 99% of the time, a rocket is used in space travel.
By rockets
Astronauts are people who travel in rockets to space.
So far, technology has only allowed us to travel to space in rockets/space shuttles.
Rockets such as the Saturn V, Falcon 9, and Space Launch System (SLS) have been used to successfully launch spacecraft and travel into space. These rockets generate enough thrust to overcome Earth's gravity and propel spacecraft beyond our planet's atmosphere into space.
Rockets aren't necessarily good for space travel they are a necessity. You cant leave earth without a rocket... you wont be able to break through the atmosphere.
Both rockets and space shuttles have been used for space travel. Rockets are typically used to launch spacecraft into orbit, while space shuttles are reusable spacecraft that can carry astronauts and cargo to and from space. Many astronauts have traveled in both rockets and space shuttles over the years.