Most commercial flights fly at 38,000 feet, above the Class B maximum height and there is not a specific limit imposed. British Airways' Chief Pilot Captain Al Bridger told MailOnline Travel that aviation industry speed limits differ from aircraft to aircraft.
What Causes Seasons on Earth? Seasons happen because Earth's axis is tilted at an angle of about 23.4 degrees and different parts of Earth receive more solar energy than others. Earth's orbit around the Sun is elliptical. Seasons are caused by Earth's axial tilt and temperatures and nature's processes are affected. Because of Earth's axial tilt (obliquity), our planet orbits the Sun on a slant which means different areas of Earth point toward or away from the Sun at different times of the year. Around the June solstice, the North Pole is tilted toward the Sun and the Northern Hemisphere gets more of the Sun's direct rays.
The Earth's seasons are not caused by the differences in the distance from the Sun throughout the year (these differences are extremely small). The seasons are the result of the tilt of the Earth's axis. The Earth's axis is tilted from perpendicular to the plane of the ecliptic by 23.45.This tilting is what gives us the four seasons of the year-spring, summer, autumn (fall) and winter.Since the axis is tilted, different parts of the globe are oriented towards the Sun at different times of the year.he Earth's axis is tilted from perpendicular to the plane of the ecliptic by 23.45. This tilting is what gives us the four seasons of the year-spring, summer, autumn (fall) and winter. Since the axis is tilted, different parts of the globe are oriented towards the Sun at different times of the year.