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Science & Space

The most popular blog posts about science & space on Hacker News. 4,455 posts.

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2740

Tianwen-1 attitude in Mars orbit

It has been a while since the last time I wrote an update about Tianwen-1’s attitude . In that post I showed that Tianwen-1 had changed to a sun angle of 0 degrees with respect to the spacecraft’s X axis on 2020-10-22. Since then, nothing changed, even after the spacecraft arrived to Mars orbit on February 2021, so I…

2746

Peer review is an honor-based system (2008)

It would take too long to expose all of the flaws of peer review, here are some: some work is just flat wrong because the reviewers cannot analyze all of the mathematical results, and because they cannot redo the experiments; numerous researchers cheat, sometimes in small ways ("2 out of 3 experiments agree with by ……

2747

Palm oil favors tumor expansion

Ninety per cent of cancer deaths are caused by metastasis, that is to say, the spread of the primary tumour to other organs. Scientists led by ICREA researcher Dr. Salvador Aznar-Benitah at IRB Barcelona have described the mechanism by which a diet rich in palmitic acid makes tumour cells more aggressive, conferring…