Mother of pearl clouds in Norway
They are also called stratospheric clouds. This is a very rare phenomenon that occurs mainly in polar latitudes at abnormally low temperatures.
Isn't Mama Nature Wonderful
#AureFreePress #Norway
“All of this has happened before. All of this will happen again.”
–Number Six
#meme #memes #distractedboyfriend #humor #humour #charliechaplin #battlestarGalactica
@edward 😋syruplitiously
If our civilization collapses, extraterrestrial archeologists can look at this and be impressed. Three satellites following the Earth in an equilateral triangle, each 2.5 million kilometers from the other two. Each contains two gold cubes in free-fall. The satellites accelerate just enough so they don't get blown off course by the solar wind. The gold cubes inside feel nothing but gravity.
Lasers bounce between each cube and its partner in another satellite, measuring the distance between them to an accuracy of 20 picometers: less than the diameter of a helium atom! This lets the satellites detect gravitational waves — ripples in the curvature of spacetime — with very long wavelengths, and correspondingly low frequencies.
It should see so many binary white dwarfs, neutron stars and black holes in the Milky Way that these will be nothing but foreground noise. More excitingly, it should see mergers of supermassive black holes at the centers of galaxies as far as... the dawn of time, or whenever such black holes were first formed. (The farther you look, the older things you see.)
It may even be able to see the "gravitational background radiation": the thrumming vibrations in the fabric of spacetime left over from the Big Bang. These gravitational waves were created before the hot gas in the Universe cooled down enough to become transparent to light. So they're older than the microwave background radiation, which is the oldest thing we see now.
It's called LISA - the Laser Interferometric Satellite Antenna. And we're in luck: ESA has just decided to launch it in 2035.
Daniel's weekly report January 26, 2024
https://lists.haxx.se/pipermail/daniel/2024-January/000051.html
WFH, curldown, QUIC, test, download buffer, curl distros, curl up, keyboard, c-ares, CNA, FOSDEM
Seen on the other place.
I have been mystified why K represented Lysine for many years. Undergrad #biochemistry lecturer said “I don't know why, but I assume it is because of the end of the side chain looks like a K”. Well, turns out the answer is more simple.
Source: M Eugenio Vazquez. Posted in honour of Margaret Dayhoff, inventor of the single-letter amino acid code
Mars Helicopter Ingenuity was just a 30-day tech. demo. mission to test powered, controlled flight on another world, with 5 test flights.
Almost 3 years later, Ingenuity completed 72 flights and would have trudged on if not for this rotor damage.
The map below shows Ingenuity's adventurous path thru Jezero Crater in the past 3 years.
Perseverance will move on soon and Ingenuity will no longer be able to communicate without it 😢
https://mars.nasa.gov/mars2020/mission/where-is-the-rover/
https://mars.nasa.gov/technology/helicopter/#Flight-Log
#Ingenuity
10/n
On Sol 1037 (three days ago) the Perseverance rover observerved this transit of Mars' smallest moon Deimos.
This timelapse was made from 177 Left Mastcam-Z images and shows the event at 10x speed.
Credit: NASA/JPL-Caltech/ASU/Simeon Schmauß