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Editors of EarthSky

Record-setting X-ray jet discovered

The most distant jet of X-rays from a supermassive black hole 12.4 billion light years from Earth has been detected by NASA’s Chandra X-ray Observatory.

Do missing Jupiters mean massive comet belt?

Two nearby planetary system have vast comet belts, but no Jupiter-like planets. Are those two things related?

Galapagos giant tortoises migrate, albeit slowly and not too far

Large male Galapagos giant tortoises trek, slow and steady, from the island lowlands up across the volcanic slopes and back again.

Flu outbreaks predicted with weather forecast techniques

New computer model takes a page from weather forecasting to predict regional peaks in influenza outbreaks.

Your brain on sugar

Binging on soda and sweets - for as little as six weeks - might do damage to your memory.

Funneling the sun’s energy

MIT engineers propose a new way of harnessing photons for electricity, with the potential for capturing a wider spectrum of solar energy.

Beat up planet Mars has more than 635,000 craters

Mars is a beaten and battered planet, according to a research team that recently finished counting and cataloging a staggering 635,000 Martian impact craters.

David Stuart on the Mayan calendar and 2012 doomsday predictions

Stuart, an archaeologist and expert on the ancient Maya, told EarthSky that neither the Maya, nor their calendar, ever predicted the end of the world.

To love your life, exercise a little more

People’s satisfaction with life was higher on days when they exercised more than usual, research shows.

Nanotech device mimics dog’s nose to detect explosives

Inspired by the biology of canine scent receptors, UC Santa Barbara scientists develop a chip capable of quickly identifying trace amounts of vapor molecules