NASA explores the unknown in air and space, innovates for the benefit of humanity, and inspires the world through discovery.

For professional climbers and commercial mountaineering companies, April and May are the optimal months to reach the "top of ...

The higher that updraft gets, it’s actually accelerating and when it reaches up to 40,000 or 50,000 feet up in the air in the summertime, it hits a layer of warm air up at the top called the ...

MLS provides high vertical resolution profiles which are nearly simultaneous with the OMI observations, and which extend down to and below the tropopause. The combination of instruments make it ...

Why does this matter for your experience? From 23,000 to 39,000 feet, at the edge of the tropopause, airspace is generally more affected by weather conditions and can often be much more turbulent.

A man of few words, Ryan Kisor chooses to let his horn do the speaking and obviously it has said volumes over the years when you consider that the trumpeter is one of a select few musicians who has ...

Who are we? Why are we here? As the Crosby, Stills, Nash & Young song suggests, we are stardust, the result of chemistry occurring throughout vast clouds of interstellar gas and dust. To better ...

These are signs of a very powerful updraught which has spread out at the tropopause (the stable layer at the top of the weather-producing part of the atmosphere) and blown forward on strong winds ...