Three basic principles govern the course we recommend. The first is the “flexible path” approach that the Augustine commission advocated and that President Obama and Congress accepted.

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by 刘貂儿 | 2013-07-17

MANY a youngster, Babbage included, has dreamed of going into space. But becoming an astronaut is a hard slog. Sandy Antunes suggests a less daunting proxy. An astrophysicist and programmer with decades of NASA experience, Dr Antunes is a proponent of pic

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by Jane | 2013-10-08

June 8, 2012 -- According to the overactive imaginations of a few doomsayers profiting from people's fear, 2012 will bring all kinds of death and destruction in the form of rampaging planets, killer solar flares and unforeseen asteroid impacts.

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by Jane | 2013-10-08

Astronomers have found 13 candidate planets flying so close to their parent stars that a year on these worlds lasts between just three and 10 hours.

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by Jane | 2013-10-08

Every 11 years or so, the sun does something quite profound — its magnetic field completely swaps polarity. This event occurs at the peak of the solar cycle, heralding the mid-point and the most active phase of Solar Cycle 24.

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by Jane | 2013-10-08

In the 1964 Cold War classic film, Dr. Stragelove, a device called the Doomsday Machine brings nuclear Armageddon to the world. It’s time we start building a Doomsday Delay Machine that will also use a powerful nuclear weapon — but for the opposite effect

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