Outer Space travel below or above the earth

Ok I know this is probably a stupid question, but when study the universe or travel to outerspace what dimensions do we look at? Like is it just 2d or do we look below or above the earth?

Think of the universe as a ball, and the earth and the sun and planets are inside of it. Anywhere away from the earth it's all just back and forth up and down for long stretches of distance. The only reference points are where the planets and suns happen to be at the moment. It's not only 3d but you also have to take into account the planets and everything are moving too. Like when they went to the moon they didn't aim for where the moon was, they aimed for where they figured out the moon was going to be by the time they got out to that distance. Like leading a shot when aiming a gun at a moving target.

Most of the objects in the Solar System are in the plane of the ecliptic. There is very little above or below this plane except for a few comets. Therefore there is little reason to explor outside the ecliptic plane, though there have been a few such missions.

There is no such thing as "below" or "above" in space. These concepts only apply in a gravitational field, such as you find close to the surface of the Earth and other planets. Basically, EVERYTHING is ABOVE the Earth, and the only thing below the Earth is the Earth.

Outer space travel can be in any direction from earth but since space is unbelievably vast and we are so limited astronomers and astronauts concentrate on the elliptical plane of the solar system. Travel is done within the 3 (length {or height depending on the observers interpretation}, depth, and width) observable dimension of the universe, scientist call it the third dimension.

Hello Riley Escobar, below and above are meaning less. If we consider the surface of the earth then above means we go away from the centre of the earth. Below means we move towards the centre ie going into the depth of the land. The dimension has to be 3d. But as speed is at higher level then the fourth dimension namely time dimension is to be taken into account.

We use all of the dimensions we can. We use all three axes while traveling and we only need one fixed point in space to get our bearings straight. From outer space, we can see both above and below the earth.

The Earth is just a ball floating around the sun, so if you get far enough away from the ball, you will be able to see exactly half of the Earth (whether that be the Northern, Southern, Eastern, or Western Hemisphere)

There are three "space" dimensions and one "time" dimension that are considered in planning outer space travel.

We *look* everywhere... when we send probes to different planets, those planets happen to be in about the same plane of revolution as the Earth is.

They look in distance and direction. Both of these figures are approximate because the Earth is moving through space.