Tag: stratosphere
The Chinese “spy ball” that flew over the USA was a sign of things to come – the stratosphere is the next battlefield
If you could be in the stratosphere, you might well imagine being in space. The sky is almost black even during the day, the surrounding horizon is clearly curved and…
PODCAST. What is the stratosphere? The Express explains everything
This week, Xavier Yvon and Bruno Cot, head of the Sciences department of L’Express, explain to you what the stratosphere is, at the heart of the Chinese balloons affair. Listen…
Chinese balloons: the battle for the stratosphere has only just begun
For the Americans, the diplomatic arm wrestling with China has turned into a ball-trap: a balloon qualified as a spy and three flying machines not very well identified were shot…
Why does the air contain less oxygen in the mountains?
If the air contains less oxygen in the mountains than at the seaside, it is because the pressure there is lower. The explanations. K2, the “mountain without pity” With 8,611…
Polar vortex: what is it?
On Titan, Saturn’s largest moon – and the only one with a dense atmosphere – a vortex forms over the south pole at the onset of winter. It was photographed…