The altitude of aircraft is measured above the ground, not above the horizon, and
it's a distance.
The altitude of the sun is not measured above the ground, and it's not a distance.
If it were, it would always be some number near 93 million miles. The altitude of
the sun is the angle that an observer sees between his horizon and the sun, and
it's different for different observers in different places.
Depends on the height of the aircraft above ground.
The altitude of the celestial pole from the horizon actually tells you your latitude. So If I locate Polaris, the star that our earth's celestial pole points to and I see it's 40 degrees above the horizon to the north, I know that my latitude is 40 degrees north. Think about the extremes, if your on the equator looking for the celestial pole, you would see it on the northern horizon correct? (0 degrees) Now think of where the celestial pole would be pointing when on the north pole. You guessed it, straight up! (90 degrees)
Your at the equator if you see Polaris at the horizon
by the topsoil
It is the horizon.
Actually, altitude is the height of an object above a specific reference point, usually the observer's horizon. It is measured in degrees, with 0 degrees being right on the horizon and 90 degrees directly overhead.
The altitude of an object in the sky is the angular distance of the object above the observer's horizon. It is measured in degrees or radians from the horizon to the object.
Altitude is the angle measured above the horizon.
Altitude is the angle measured above the horizon.
New York City.
The altitude of the horizon is 0 degrees. This is because the horizon is considered to be at eye level, so it is equivalent to the observer's horizontal line of sight.
Altitude of a celestial body is the angular distance between the horizon and the body when viewed from a specific location on Earth. It is measured in degrees and ranges from 0° at the horizon to 90° at the zenith, directly overhead.
The attitude (do not confuse with altitude) indicator is nicknamed the artificial horizon.
66.5 degrees
Almost . . ."Altitude" is the apparent angle of the object above the horizon.
At zero degrees altitude, you would be at ground level or sea level. This position marks the horizon line where the sky meets the Earth.
90 degrees