17/08/2016

Two pairs of planets perform in the August twilight

Step outside as the stars come out, look southwest, and you'll see an eye-catching pattern. For the next few days (August 17–22, 2016), bright orange Mars shines to the right of Saturn and the reddish star Antares. The ...

Gaia's second anniversary marked by successes and challenges

Operating in the depths of space, far beyond the Moon's orbit, ESA's Gaia spacecraft has now completed two years of a planned five-year survey of the sky. Despite a series of unexpected technical challenges, the mission is ...

Lessons from Fukushima

When you're an operator or engineer at a nuclear power plant, there are things you want to know long before you're faced with an emergency.

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