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Astronomy, astronautics, meteorology, physics. Engineer, trying to build the big picture of #science via selected & curated pics, videos & links
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May 18 4 tweets 3 min read
42 years ago #Today, Mount St. Helens erupted: the deadliest and most destructive volcanic event in the history of the U.S. [read more: bit.ly/1L0dKzT] [video: buff.ly/3yi2RK7] A red Ford Pinto with a blue dirt bike before the hell. The story behind one of the most puzzling photos of Mount St Helens' May 1980 eruption, happened 42 years ago #Today ow.ly/2aJK50vujyW
Jan 22 11 tweets 5 min read
The Large Hadron Collider is the world’s largest, most powerful particle accelerator: in a way it's the world's largest single machine. It consists of a 27-km ring excavated between the lake of Geneva and the Jura mountain range at an average depth of 100 m. Let's see some facts Each of the 6000-9000 superconducting filaments of niobium-titanium coiled between them to make up the LHC cables is 0.007 mm thick, about 10 times thinner than a normal human hair. If put one after another they would stretch from the Earth to the Sun and back six times
Jan 15 11 tweets 6 min read
Hunga Tonga-Hunga Ha'apai volcano explosive activity continues. Volcanic Ash Advisory Center Wellington warned about a volcanic ash plume that rose up to estimated 52000 ft (15800 m) altitude or flight level 520 and is moving at 05 kts in N direction buff.ly/3tz5maT NOAA NESDIS provides a coverage of the Tonga eruptions with satellite imagery from GOES West and Himawari-8 satelites: buff.ly/33A3Wly
Jan 14 4 tweets 4 min read
17 years ago #Today, ESA's Huygens spacecraft made its descent to the surface of Saturn's moon Titan, carried to the gas giant by NASA's Cassini spacecraft ow.ly/sZVN30nhabb This the last view of Huygens from the Cassini spacecraft 17 years ago #Today. Thanks to @esa for sharing the photo: buff.ly/3I4YWUZ
Dec 14, 2021 5 tweets 4 min read
The last human's view from the surface of the Moon so far: a post EVA-3 window pan by Jack Schmitt, Apollo 17, taken 49 years ago #Today go.nasa.gov/2gLet2C The last time we walked on the Moon. Portraits of Gene Cernan and Jack Schmitt onboard the lunar module Challenger before lift off, 49 years ago #Today go.nasa.gov/2gLet2C #Apollo17
Nov 20, 2021 5 tweets 5 min read
Pete Conrad's shadow in a lunar surface opposition surge instant. This was happening 52 years ago #Today go.nasa.gov/2fs41dh #Apollo12 Image A famous crossed lunar selfie: Alan Bean's picture of Pete Conrad taking Alan's picture during #Apollo12's extravehicular activity, 52 years ago #Today go.nasa.gov/2g6SmjS Image
Nov 19, 2021 4 tweets 3 min read
52 years ago #Today, the Apollo 12 crew landed on the Moon. This is the Intrepid Lunar Module prior to the descent. The largest crater is Ptolemaeus go.nasa.gov/2fV0eoE Image The Apollo 12 crew prepare for undocking and TV coverage of the event, followed by the second lunar landing attempt on the Ocean of Storms, 52 years ago #Today buff.ly/2D12Zly
Aug 2, 2021 4 tweets 4 min read
Dave Scott performed one of the most legendary experiments: the galilean 'hammer & feather' held on the Moon, 50 years ago #Today go.nasa.gov/1mVWEHT #Apollo15 #Apollo50 One of the best series of photos taken during the Apollo 15's third extravehicular activity, 50 years ago #Today go.nasa.gov/2aKCzsh [5 photos stitched with MS ICE] #Apollo50 Image
Jul 24, 2021 4 tweets 3 min read
52 years ago #Today, the Apollo 11 mission returned safely to Earth. This is the view of Earth that the crew had before reentry go.nasa.gov/2aDLlWm This is what the Apollo 11 crew saw when they reentered the Earth's atmosphere exactly 52 years ago #Today go.nasa.gov/2aDLlWm
May 19, 2021 4 tweets 3 min read
This impressive photo by Keri Lee Nelson shows us a mushroom-shaped iceberg. Part of a larger iceberg that's slowly shedding weight via calving, as it loses weight the smooth part (which has been submerged for some time) is rising out the water [source: buff.ly/2QLLvRd] Image This mushroom iceberg was observed in 1912 by Frank Hurley, who visited Antarctica as a member of the First Australasian Antarctic Expedition, 1911-1914 [source: buff.ly/3jDM9wI] Image
May 18, 2021 4 tweets 3 min read
41 years ago #Today, Mount St. Helens erupted: the deadliest and most destructive volcanic event in the history of the U.S. [read more: bit.ly/1L0dKzT] [video: buff.ly/3yi2RK7] A red Ford Pinto with a blue dirt bike before the hell. The story behind one of the most puzzling photos of Mount St Helens' May 1980 eruption, happened 41 years ago #Today ow.ly/2aJK50vujyW
Jan 27, 2021 4 tweets 4 min read
They didn't make it to the Moon, but through their efforts and sacrifice we all did. The Apollo1 tragedy happened 54 years ago #Today [source, read more: buff.ly/2jvXRwW] «If we die we want people to accept it. We are in a risky business, and we hope that if anything happens to us, it will not delay the program. The conquest of space is worth the risk of life» - Virgil "Gus" Grissom, died on the #Apollo1 54 years ago #Today bit.ly/2Bx5UiV
Dec 28, 2020 4 tweets 3 min read
This animation shows the different effects produced by an earthquake on the conventional and anti seismic foundation of a building [source, Said Lopez: buff.ly/3nPrt7j] Anti-seismic fondation can use several kinds of dampeners. This is a bi-directional dynamic loading test on steel damper for base isolated buildings simulating the behavior caused by earthquake [source, full video, Tokyo Tech: buff.ly/3mV1cDo]
Sep 14, 2020 6 tweets 4 min read
Last year, a company named Nectome, "advetised" a service for backing up & (eventually) digitizing people's brains which was going to be 100%-fatal. They retracted saying it wasn't correct they expected to revive a whole consciousness from the connectome buff.ly/2YT1Eaq The actual computational requirements for running an uploaded human mind are very difficult to quantify & strongly depend on the chosen level of simulation model scale. In other words, if you want a very precise copy, you need a ginormous processing power buff.ly/2G0UCYG
Dec 21, 2019 8 tweets 5 min read
People have speculated over the nature of seemingly useless physical human characteristics for thousands of years. It wasn’t until the late 18th and early 19th centuries, though, that the idea of vestigiality would enter the public imagination ow.ly/jS5l30oigUH Examples of human vestigiality are numerous, including the anatomical, the behavioral, and molecular. Among behavioral, goosebumps are caused by your arrector pili, the smooth muscle fibers that contract involuntarily when you are stressed, excited or cold buff.ly/2FRw2u7
Apr 10, 2019 14 tweets 9 min read
In few minutes, astronomers across the globe will hold six major press conferences simultaneously to announce the first results of the Event Horizon Telescope (EHT), which was designed precisely for that purpose ow.ly/bSMf30ompQi. Watch LIVE: ow.ly/G0mT30onYFi More about the Event Horizon Telescope, an international collaboration aiming to capture the first image of a black hole by creating a virtual Earth-sized telescope eventhorizontelescope.org