Related topics: nasa · asteroid · sun · moon · atmosphere

Falling to Earth takes a long time

Our planet's atmosphere reduces the energy of satellites in orbit (on Earth, this would be like reducing their speed, but in space, it's complex!). This then brings them back down to Earth.

First humans in Tasmania must have seen spectacular auroras

Drilling a 270,000-year old core from a Tasmanian lake has provided the first Australian record of a major global event where the Earth's magnetic field 'switched'—and the opportunity to establish a precedent for developing ...

Why African countries must invest more in earth sciences

The African continent contains some of the world's richest mineral resources. For instance, the Democratic Republic of Congo produces most of the world's cobalt; Rwanda, Ethiopia and Mozambique are major contributors to global ...

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