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Science & Space

The most popular blog posts about science & space on Hacker News. 46 posts.

2011
12

The Clock in the Mountain

A work crane at the Clock site in western Texas. There is a Clock ringing deep inside a mountain. It is a huge Clock, hundreds of feet tall, designed to tick for 10,000 years. Every once in a while the … Continue reading →

14

Elon Musk says he will put millions of people on Mars

New Scientist – Musk declared recently that he could put a human on Mars in 10 to 20 years’ time. It is a remarkable claim, yet even more astonishingly Musk tells me that he could do it for $5 billion, and possibly as little as $2 billion – a snip when you consider that the International Space Station (ISS) has cost…

29

Can you see the flag on the Moon with a telescope?

The answer is basically "not a chance". No Earthbound telescope can see the flag on the Moon. Why not? For openers, the Earth's atmosphere is never steady enough to allow resolution below about one arc second for most locations. Beyond that, the telescope required to "see" the flag would need to be absolutely huge!…