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Time-lapse video of the Aurora Borealis and Aurora Australis, shot from the International Space Station.
Astronaut Helen Sharman recounts a dream she has of returning to space and viewing Earth from above once more.
UFO sightings are common in America. So is a lack of political transparency.
Friends build the first scale model of the solar system so we can feel how big it is—and how small we are.
According to economists, if intelligent life elsewhere wants to kidnap earthlings, there must be a reason—and a business model.
While you were (probably) sleeping, Earth was treated to its annual viewing of the Perseid cloud.
Created from images captured by New Horizons.
A near-death experience makes this week’s International Asteroid Day a little more tricky to celebrate.
Recent astronomical discoveries have expanded our understanding of the universe—and messed up godhead performance reviews.
Ignore the critics: Christopher Nolan’s Interstellar is not only a serious, complex comment on space policy, it’s a heartbreaking, philosophical look at the value of time.
The Jazz Age blasts into orbit, adding oxygen parties and mighty pincers to the rise-and-fall decadence of the intergalactic one percent.
We gathered writers and thinkers to consider everything that happened over the past 12 months and asked them: What were the most important events of 2013—and what were the least?