Spiral pattern gives clue to how high-mass stars form

New observations have revealed a spiral pattern in a disk of material around a still forming, but already high-mass, baby star. This indicates that there is gravitational instability in the disk, which has important implications ...

Can clouds of moon dust combat climate change?

A group of US scientists this week proposed an unorthodox scheme to combat global warming: creating large clouds of moon dust in space to reflect sunlight and cool the Earth.

Video: The Sample Transfer Arm: A helping hand for Mars

The mission to return Martian samples back to Earth will use a European 2.5 meter-long robotic arm to pick up tubes filled with precious soil from Mars and transfer them to a rocket for an historic interplanetary delivery.

Study: Modern arms technologies help autocratic rulers stay in power

Autocrats and dictators quickly acquire new arms technologies from abroad and often use them against their own citizens. Now a study of multiple nations during the period 1820–2010 shows that the spread of military technologies ...

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