Tag Archives | orbit


Climate change studies vexed by Vesta

Paleoclimate studies, where scientists look into the past to try and understand changes in Earth’s climate, may be a waste of time if astronomers are correct in their theory that relatively minor bodies like the asteroid Vesta can cause chaotic fluctuations in Earth’s orbit. NASA’s Dawn space-probe flew by Vesta last Saturday. The journal Astronomy […]

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Into Orbit Via A Slingshot

The public’s imagination may have been fired up in the past by proposals for “space elevators” – where satellites or space vehicles are carried up a 62,000 mile cable into space – but the technological challenges that exist for such a project make its implementation a futuristic dream. But another type of tether may hold […]

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