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Science & Space

The most popular blog posts about science & space on Hacker News. 409 posts.

2021
47

Three hours to save Integral spacecraft

On 22 September, around midday, ESA’s Integral spacecraft went into emergency Safe Mode. One of the spacecraft’s three active ‘reaction wheels’ had turned off without warning and stopped spinning, causing a ripple effect that meant the satellite itself began to rotate.

51

The Inconsistency of Arithmetic (2011)

Note: These pages make extensive use of the latest XHTML and CSS Standards . They ought to look great in any standards-compliant modern browser. Unfortunately, they will probably look horrible in older browsers, like Netscape 4.x and IE 4.x. Moreover, many posts use MathML, which is, currently only supported in…

52

Peer-reviewed papers are getting increasingly boring

The number of researchers and peer-review publications is growing exponentially. It has been estimated that the number of researchers in the world doubles every 16 years and the number of research outputs is increasing even faster. If you accept that published research papers are an accurate measure of our scientific…

59

Why cancer cells waste so much energy

MIT biologists have found a possible explanation for the Warburg effect, first seen in cancer cells in the 1920s. They found cancer cells use fermentation, an inefficient metabolic pathway, because it helps them to generate large quantities of a molecule called NAD+, which they need to synthesize DNA and other…