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 #Todayow.ly/2aJK50vujyW
In these two pictures, Mount St. Helens is showed before and after the devastating 1980 eruption, happened 42 years ago #Todayow.ly/D9hG50wpiJN
This picture of a hiker on Mount Adams summit is one of the best photos of Mount St. Helens eruption, happened 42 years ago yesterday [source, read more: buff.ly/2LTAEm1]
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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
The protons accelerated are obtained from standard hydrogen. Although proton beams are very intense (1.15x10¹¹ protons in a beam size of 3.5 micrometres), only 2 nanograms of hydrogen are accelerated each day. It would take about 1 million years to accelerate 1 gram of hydrogen.
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
In this Himawari-8 full disk view, a powerful shockwave can be seen during the Hunga Tonga-Hunga Ha'apai eruption. Source: buff.ly/3foKpHq
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
During the descent, Huygens recorded the sounds of Titan as well. That happened 17 years ago #Today and you can actually listen to the sounds of an alien world buff.ly/2ixaYxk
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 #Todaygo.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 #Todaygo.nasa.gov/2gLet2C#Apollo17
This is the Apollo 17 lunar module Challenger during its lift off from the lunar soil, happening 49 years ago #Todaybit.ly/2hu0csf
A famous crossed lunar selfie: Alan Bean's picture of Pete Conrad taking Alan's picture during #Apollo12's extravehicular activity, 52 years ago #Todaygo.nasa.gov/2g6SmjS
At Pete's left wrist, his checklist open to one of the pages on which the backup crew pasted pics of Playboy Playmates bit.ly/2fgFrhS#Apollo12, #52YearsAgoToday
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
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 #Todaybuff.ly/2D12Zly
Pete Conrad was the first to exit the Apollo 12 Intrepid Lunar Module 52 years ago #Today, starting the first lunar extravehicular activity after Apollo 11 go.nasa.gov/2fs41dh