NASA and Jeff Bezos today confirmed that one of the Saturn 5 first stage engines recovered from the ocean floor by Bezos’ expedition was from the Apollo 11 launch.
The last is by far the scariest.
An evening pause: There are many intellectual fools these days who love to denigrate the United States and its history. These words, however, tell its true story, honestly and simply. Woe to us if we forget it.
Six images that ruined the lives of the individuals they made famous.
Except for the last (which isn’t a photo), every one one of these images is iconic. That an innocent person was destroyed by each says a great deal about the decline of our culture in the past half century.
Scientists have finally discovered the forgotten formula for the concrete the Romans used.
The secret to Roman concrete lies in its unique mineral formulation and production technique. As the researchers explain in a press release outlining their findings, “The Romans made concrete by mixing lime and volcanic rock. For underwater structures, lime and volcanic ash were mixed to form mortar, and this mortar and volcanic tuff were packed into wooden forms. The seawater instantly triggered a hot chemical reaction. The lime was hydrated—incorporating water molecules into its structure—and reacted with the ash to cement the whole mixture together.”
The Portland cement formula crucially lacks the lyme and volcanic ash mixture. As a result, it doesn’t bind quite as well when compared with the Roman concrete, researchers found. It is this inferior binding property that explains why structures made of Portland cement tend to weaken and crack after a few decades of use, Jackson says.
The real cause behind the plane crash that killed Yuri Gagarin in 1968.
A man claims he has found a piece of debris from the Russian space station Mir in his backyard in northern Massachusetts.
And I have a bridge I want to sell you. This story is very suspicious. No picture, the rock isn’t metallic, the NASA engineer who identified it isn’t identified even though he wrote a letter to the man, and it was found on the eastern United States even though Mir was de-orbited over the south Pacific.
If this story is true, than the journalist who wrote it did a really bad job of reporting it.
An evening pause: As this is June 6, the anniversary of D-Day in World War II, let’s watch John Wayne show us how Americans once did it. From the 1962 film, The Longest Day.
A museum holding the recovered remains of Henry the Eighth’s flagship the Mary Rose, which sank in 1545, has now opened.
The images show a quite spectacular collection of artifacts, including the ship itself.
Sixty years ago today Edmund Hillary and Tenzing Norgay reached the peak of Mt. Everest.
Tests have now shown that at least one bead of jewelry from an Egyptian tomb was made from a meteorite.
The tube-shaped bead is one of nine found in 1911 in a cemetery at Gerzeh, around 70 kilometres south of Cairo. The cache dates from around 3,300 BC, making the beads the oldest known iron artefacts in Egypt.
An early study found that the iron in the beads had a high nickel content — a signature of iron meteorites — and led to the suggestion that it was of celestial origin2. But scholars argued in the 1980s that accidental early smelting efforts could have led to nickel-enriched iron3, while a more recent analysis of oxidised material on the surface of the beads showed low nickel content4.
To settle the argument, Diane Johnson, a meteorite scientist at the Open University in Milton Keynes, UK, and her colleagues used scanning electron microscopy and computed tomography to analyze one of the beads on loan from the Manchester Museum, UK. The researchers weren’t able to cut the precious artefact open, but they found areas where the weathered material on the surface of the bead had fallen away, providing what Johnson describes as “little windows” to the preserved metal beneath.
The nickel content of this original metal was high — 30% — suggesting that it did indeed come from a meteorite. To confirm the result, the team observed a distinctive crystallographic structure called a Widmanstätten pattern. It is only found in iron meteorites, which cooled extremely slowly inside their parent asteroids as the Solar System was forming.
Twenty lost vials of Apollo 11 moon dust have been found in storage at Lawrence Berkeley National Laboratory after forty years.
Not surprisingly, NASA is demanding them back.
