Tag Archives: gravity

Microgravity: Overlooking the weightless elephant in the room

Impact: Space Exploration    May 16, 2010
Astronaut Marsha Ivins (STS-98) with weightless long hair. . Credit: NASA The American space agency NASA is going through a mid-life crisis. Its future is at stake, and whatever directions are chosen they will be controversial. While NASA isn’t the be-all end-all of world space efforts, it is arguably the biggest, most visible, and iconic [...]
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Science in cold fusion

Essay: March 23, 2010
On March 23-24, 2010 the American Chemical Society, one of the largest science organizations in the world, hosted a conference called New Energy Technology, during its national meeting. Fifty papers were presented. Another name for the topic of the conference was ‘cold fusion.’ In a way, I’m reluctant to bring up the topic of cold [...]
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Dark matter missing after supernova blasts

News: Cosmology    January 14, 2010
Why aren’t there enough stars and dark matter in the galaxies we observe (particularly the many dwarf galaxies)? Good question. It’s been bothering cosmologists for decades. It bothers physicists too; they can’t see or measure dark matter, since whatever it is, it doesn’t affect the usual electromagnetic suspects. Yet dark matter is thought to account [...]
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