Scientists in China are baffled after a huge bubble cloud appeared above Beijing. Concened people uploaded photographs of the phenomenon looming over the Chinese capital
One observer at the Beijing Planetarium described what he saw: "At first, it's relatively small and bright, the upper part is something like a semi-circle, a spherical ring of light, it's obviously becoming bigger and bigger then."
The object, which appeared in the sky for fifteen minutes, gradually became bigger and thinner. Similar reports came in from Shenyang, Shanxi, and Zhejiang provinces, although experts say it was probably the same phenomenon.
Zhu Jin, the curator of the Beijing Planetarium said: "It must have been caused by human beings, not nature or things like that."