How far can you see to the horizon from an airplane at 9800 m?

How far can you see the horizon on land?

Depends on how sunny it is that day

How far up on a plane do you have to be to see the horizon?

You can see the horizon from any altitude on a plane. The horizon is the line where the sky meets the earth or sea, and it appears at eye level regardless of how high up you are.

How far can a person see or what is a normal visible horizon?

6.23 miles

You can always see it but it to far away to touch mountains rest on it at sea it surrounds you?

the horizon

How far is the horizon from shore?

The distance to the horizon from the shore depends on the height of the observer's eyes above sea level. On average, a person standing at sea level on the shore can see approximately 3 miles to the horizon. If the observer is standing at a higher elevation, such as on a cliff or in a tall building, they can see farther.

You are in a hot air balloon 400 m above the ground. How far can you see that is how far is your horizon?

It seems like 1,000,000,000,000,000 meters away

Is it be impossible to see any object the distance of the moon or the moon?

Our eyes can only see as far as the horizon, due to the curvature of the Earth. For instance, an observer standing on a hill 100 feet (30 m) in height, their horizon is at a distance of 12.2 miles (19.6 km). Obviously, without the restriction of a horizon, we can look out far into space on a dark night and see our moon and many stars and planets with the naked eye - even better with a telescope.

Why can you see the sky from the north pole to the equator when you can only see a few miles of water to the horizon and you can't see airplane tracks that far away - I do not understand this?

What, exactly, did you see? - You can basically see anything for which you have line-of-sight, that is, if a straight line between the object and you doesn't go below the horizon. I think the questioner may be mixing up the "celestial equator" and the Earth's equator. The celestial equator is the "projection" of the Earth's equator onto the sky. It a great distance away, effectively at infinity. Let's consider the difference between the two equators. Normally, you can see only a few miles to the horizon, depending on your height above your surroundings. Obviously you can't see the Earth's equator from the North Pole. Things above ground such as airplane tracks can be seen when they are further away than the horizon, but still your visibility is limited by the Earth's surface. However, from the North Pole, you can see as far south in the sky as the celestial equator. So, you could just about see a star in that part of the sky. The stars are light years away, of course. Imagine you are near a distant star on the celestial equator. In theory, at that distance, you could see one full hemisphere of the Earth from pole to pole. So, someone at the Earth's North Pole could see that star. To sum up: it's because the stars are so far away that you can see a star on the celestial equator from the North Pole.

If you can see a plane flying at 36000 feet but it is low over the horizon how far is the plane from the observer?

That depends on the angle of elevation

How far you can see ahead becomes shorter as you reach a hill top?

Yes. The hilltop is your horizon line. As you approach the top of the hill, the distance between you and your horizon becomes inches, and you cannot see down the other side until you reach the top.

What does on the horizon mean?

The "horizon" is the furthest you can see. "On the horizon" therfore refers to an object which is just in sight.

Is the big dipper up the horizon or below the horizon?

In the northern hemisphere it is above the horizon or we wouldn't see it.