576
Kurt Gödel, who was one of Albert Einstein's best friends in his later years, found a solution to general theory of relativity that modelled a strange, unusual and rotating universe allowing for backward time travel
[the Gödel metric: buff.ly/3E4m7Or]
577
Less than 200 vessels (across all sizes) suffer from marine accidents and capsize every year out of 80,000+ in total. Ships survive storms thanks to several measures
[read more: buff.ly/3fobhYn]
[📹 __tuglife__: buff.ly/3rXMlNc ]
578
Costasiella kuroshimae (leaf sheep), is a sea slug performing 'kleptoplasty' = retaining the chloroplasts from the algae it eats, so that they can be used for photosynthesis [read more: buff.ly/2t9sPys] [📹️Catrin Pichler: buff.ly/3iASjgI]
579
The Andromeda galaxy is 6 times bigger in the sky than the full Moon: it's just too dim to see with the naked eye. This composite created by Tom Buckley-Houston shows what it would look like at night if it was just brighter [read more: ow.ly/EMek50A0CeU]
580
A sneaker wave is a disproportionately large coastal wave that can appear in a wave train without warning. This video was shared by Marcella Ogata-Day to help bring awareness of the dangers of sneaker waves [source, read more: buff.ly/3GyVgu9]
581
Some species of porcupine fish use a neurotoxin which is 1200 times stronger than cyanide, but they have a nice smile
[read more: bit.ly/2pASY5q]
[📹 Gotzon Mantuliz: buff.ly/3YgCzF3]
582
Boiling coffee with a moka. This is a movie made with neutron images that shows the coffe making process. The movie was made by A. Kaestner at the cold neutron imaging beam line ICON at the Paul Scherrer Institute
[full video: buff.ly/2KDuOT4]
583
Crows and corvids in general are among the most playful animals.
This is a snowboarding one.
[read more: buff.ly/2N2PkPn]
[📹 MadtimeCA: buff.ly/3Q1VdLl
584
How high you would jump on other planets or moons?
This video shows the average jump height of a person on Earth and its equivalent in other worlds of the Solar System
[full video, HD, MetaBallStudios: buff.ly/3Jzo5sW]
585
The Andromeda galaxy is 6 times bigger in the sky than the full Moon: it's just too dim to see with the naked eye. This composite created by Tom Buckley-Houston shows what it would look like at night if it was just brighter
[read more: ow.ly/EMek50A0CeU]
586
This remarkable picture of Almaty, Kazakhstan, taken by Igors Jefimovs in January 2014, shows an impressive separation of a very thick smog and open air due to a very intense inversion buff.ly/2IvQSic [more about the inversion: buff.ly/2phGDoO]
587
111 years ago #Today, in Stockholm, Sweden, Marie Skłodowska Curie became the first person to be awarded a second Nobel prize. She's still the only person awarded with two Nobel prizes in two different branches of science bit.ly/2kn2vfT
588
When a seagull will repeatedly stamp its feet in a rhythmic pattern, that is called the rain dance. It mimics the rain by vibration to brings earthworms and other bugs to surface
[read more: ow.ly/nUmM50nZ0ug]
589
Sanderlings largely feed on isopods & mole crabs. They show a curious dynamic behavior, moving up and down along the shore according to waves & tides in order to catch their prey
[read more: buff.ly/3gnXIbF]
[source: buff.ly/35OQmfk]
590
There is more than a way to inflate a plastic bag and this clip explains how to do it with a *single breath* using science and the Bernoulli's principle
[source, Wolf_science: buff.ly/3kRMRJl]
591
At St. Louis Aquarium kids can design a fanciful sea creature, and then watch it come to life and swim with all the other sea creatures in a wall-sized digital aquarium
[source: buff.ly/2Z9dBdW]
[more about Sketch Aquarium: buff.ly/3jORn8O]
592
This gloved hand holds life-sized models of nuclear fuel pellets with their injection rod. Each pellet can produce the same energy as 3 tons of coal, so this handful equals ~60 tons of coal or ~28,000 m³ of gas or ~34,000 liters of oil [source, read more: buff.ly/3OJxjV5]
593
A facial reconstruction project focusing on ancient Egypt on some of its pharaohs and even normal people
[full video: buff.ly/3TRSeI1]
594
You could climb out of a hole with a ladder or a rope—or you could call on your physics knowledge. Running in circle, for example, will introduce a rotational force, and therefore a larger normal and frictional force
[explanation: buff.ly/3BCgl6v]
595
The armadillo girdled lizard is a species of lizard in the family Cordylidae and its size can range from 7.5 to 9 cm (3.0 to 3.5 in) [read more: buff.ly/2DISYHC] [📷 buff.ly/3C481hg]
596
1. stare at the red dot for ~30 seconds
2. turn your eyes towards a plain, white surface
3. keep blinking your eyes quickly
4. discover what is a negative afterimage: buff.ly/3wzOnWF
597
A study found honeybee venom destroyed 2 types of hard to treat breast cancer cells. Melittin on its own reduced cancer cell growth & can be produced synthetically. One venom concentration killed cancer cells within 1 hour with minimal harm to other cells buff.ly/2YU9IcD
598
Devil's Tower is likely an igneous intrusion, formed underground from molten rock that pushed up into sedimentary rock and became solid ~50 million years ago [read more: buff.ly/3bODCow-] [clip by IG's Quin Schrock: buff.ly/2ZYljKS-]
599
This photo is black and white, but that grid tricks your brain into seeing a colour image.
It's called the 'colour assimilation grid illusion'.
[source, read more: buff.ly/2YBCj7q]
600
It seems unreal. On January 1, 2022 snow fell in the deserts in the northwestern Saudi Arabia, in the town of Jebel al Lawz in the province of Tabuk. This is what it looked like under the desert sands
[read more: buff.ly/3F6wQZA]
Astronomy, astronautics, meteorology, physics. Engineer, trying to build the big picture of #science via selected & curated pics, videos & links