Building a scale model of the International Space Station — using matchsticks!

Building a scale model of the International Space Station — using matchsticks!

Recently completed by Acton, the wooden ISS is as impressive in size as it is in detail. Comprised of 282,000 matchsticks, the 1/26 scale model required 8 gal (30 L) of glue and took roughly 1,950 hours to complete. Whereas the actual ISS measures out at 108.5 m (356 ft) wide and 72.8 m (239 ft) long, Actonโ€™s scaled down version measures out at an impressive 4.1 m (13.5 ft) and 2.8 m (9.2 ft) wide. Solar arrays, trusses, communication components, and even the Space Shuttle Atlantis, are all there in intricate detail.

With pictures.

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Fact checking Elon Musk’s statements about his company’s efforts to reuse the Falcon 9 first stage reminds us of some space history and one of Musk’s chief competitors.

Fact checking Elon Musk’s statements about his company’s efforts to reuse the Falcon 9 first stage reminds us of some space history and one of Musk’s chief competitors.

The bottom line: Bringing the first stage back to Earth safely and vertically is doable, and has been done before.

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In response to the Obama administration’s request a judge has lifted her injunction against the purchase of Russian rocket engines for the Atlas 5 rocket.

In response to the Obama administration’s request a judge has lifted her injunction against the purchase of Russian rocket engines for the Atlas 5 rocket.

More here. It appears that, at least for the moment, the Atlas 5 rocket will be allowed to buy these engines. Whether the Russians will continue to allow them to buy them however remains an open question, especially if things in the Ukraine get worse.

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Less than 24 hours after the House held Lois Lerner in contempt, the IRS has finally agreed to turn over all her emails to House investigators.

Less than 24 hours after the House held Lois Lerner in contempt, the IRS has finally agreed to turn over all her emails to House investigators.

Republican lawmakers have been demanding the documents for months and, in March, Oversight Committee chairman Darrell Issa threatened to hold IRS commissioner John Koskinen in contempt if he did not produce the e-mails requested by the committee. Koskinen had told lawmakers it might take years to produce them. [emphasis mine]

Years, eh? That’s suddenly changed, hasn’t it?

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How to turn an American spacecraft ferrying astronauts to ISS serve as a lifeboat as well.

How to turn an American spacecraft ferrying astronauts to ISS serve as a lifeboat as well.

A very interesting read, as it outlines the specific technical problems faced by engineers that one wouldn’t normally consider. The capsule has to be able to remain functional and reliable after months in orbit, but it also has to become functional at a moment’s notice, should an emergency happen.

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The creation in the lab of an as yet unnamed superheavy element adds weight to the theory that there might exist even heavier elements that are stable in nature.

The creation in the lab of an as yet unnamed superheavy element adds weight to the theory that there might exist even heavier elements that are stable in nature.

The scientists did not observe element 117 directly. Instead, they searched for its daughter products after it radioactively decayed by emitting alpha particlesโ€”helium nuclei with two protons and two neutrons. โ€œThe heavy nuclei makes an alpha decay to produce element 115, and this also decays by alpha decay,โ€ says Jadambaa Khuyagbaatar of GSI, lead author of a paper reporting the results published on 1 May in Physical Review Letters.

After a few more steps in this decay chain, one of the nuclei produced is the isotope lawrencium 266โ€”a nucleus with 103 protons and 163 neutrons that had never been seen before. Previously known isotopes of lawrencium have fewer neutrons, and are less stable. This novel species, however, has an astonishingly long half-life of 11 hours, making it one of the longest-lived superheavy isotopes known to date. โ€œPerhaps we are at the shore of the island of stability,โ€ Duฬˆllmann says.

If these superheavy elements could be created, they would be the stuff of science fiction. They might have properties that we would find extremely useful.

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