Category: 7. Science

Researchers have detected an unexpectedly high abundance of presolar grains — dust from stellar explosions predating our Solar System — in the samples of the near-Earth asteroid (101955) Bennu collected by NASA’s OSIRIS-Rex spacecraft.

Aspen (Populus tremula) is an important keystone species. Only a couple of per cent of the trees in Finnish forests are aspens, and actual aspen stands are even rarer. Aspens nevertheless host more than a thousand species: mammals, birds,…

 

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