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Why exercise slows memory loss in Alzheimer’s

A stress hormone produced during moderate exercise may protect the brain from memory changes related to Alzheimer’s disease.

Editors of EarthSky

January 24, 2013

Space instrument adds big piece to the solar corona puzzle

How can the solar atmosphere get hotter, rather than colder, the farther you go from the sun's surface? A suborbital rocket mission that launched in July 2012 has just provided a major piece of the puzzle.

Editors of EarthSky

January 23, 2013

Taking the temperature of the universe

Astronomers using a CSIRO radio telescope have taken the Universe’s temperature, and have found that it has cooled down just the way the Big Bang theory predicts.

Editors of EarthSky

January 23, 2013

Using silicon to produce hydrogen on demand

New technology could help power portable devices like satellite phones and radios.

Editors of EarthSky

January 22, 2013

Betelgeuse braces for a collision

Betelgeuse, the nearest red supergiant star to Earth, and its arc-shaped shields could collide with an intriguing dusty ‘wall’ in 5000 years.

Editors of EarthSky

January 22, 2013

Did an 8th century gamma ray burst irradiate the Earth?

A nearby short duration gamma-ray burst may be the cause of an intense blast of high-energy radiation that hit the Earth in the 8th century.

Editors of EarthSky

January 21, 2013

Martian crater may once have held groundwater-fed lake

A NASA spacecraft is providing new evidence of a wet underground environment on Mars that adds to an increasingly complex picture of the Red Planet's early evolution.

Editors of EarthSky

January 21, 2013

A microqusar makes a giant manatee nebula

A new view of a 20,000-year old supernova remnant provides more clues to the history of this giant cloud that resembles a beloved endangered species, the Florida Manatee.

Editors of EarthSky

January 19, 2013