501
Leonardo is a bipedal robot that combines walking with flying to create a new type of locomotion. It can walk a slackline, hop, and even ride a skateboard
[📹 Laurie Leshin]
[learn more: buff.ly/3DBGv81]
502
Of the many structures Leonardo da Vinci designed, perhaps none made more ingenious use of materials than his practical design for an easy-to-assemble, self-supporting bridge
[read more: buff.ly/3RcIg2A]
[📹 buff.ly/3AnBwrM]
503
Attacus atlas is one of the world's largest moths. They can have wingspans of up to 30 cm. Born without the ability to eat, they live on the reserves they store as caterpillars
[read more: buff.ly/2J9lJBl]
[📹 Ted Cox: buff.ly/3wmUg8e]
504
It can take a photon thousands of years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth [read more, NASA: buff.ly/2JfNSGX, buff.ly/2Ioqt4K]
505
Swedish king Eric XIV's parade armour was made in Arbogain 1562 & decorated in Antwerp by goldsmith Elisaeus Libaerts. One detail of its magnificence, is certainly given by its sabaton's extreme flexibility [3D model: buff.ly/3pRtUX9] [source: buff.ly/3dHeQch]
506
This is what you see when you look out from the International Space Station (and using a telelens)
[source, @OlegMKS: buff.ly/3QTyFhi]
507
Corvids, a group of birds that include jays, ravens, and crows, spend a lot of time under their parents' tutelage. Researchers have found that this may partially explain corvids have exceptional intelligence [full paper: buff.ly/3f7PZfa]
508
As it passed below the south pole of the Moon on Nov 7, 2014, JAXA's Kaguya spacecraft spied the Earth in the distance [source: bit.ly/2fUJLVl]
509
The geographus cone snail can harpoon a prey with a venom potent enough to kill humans, but it can also release an insulin agent that cause fish to undergo hypoglycemic shock, essentially stunning it [video by Biopixel: buff.ly/2YlN5R8]
510
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
511
Rolls Royce is famous for including umbrellas in their cars' structure. This is a Ghost II model, where the umbrella is put in the car's door [source by Marcel Sommer: buff.ly/30rRVLm]
512
Photographer Amos Nachoum captures amazing moments of the life in the oceans, like this leopard seal on the brink of eating a penguin, shot at Port Lockroy, Antarctica [source, read more: buff.ly/3qVCbuB]
513
Archerfish shoot their prey down with water droplets from their mouths. They are remarkably accurate and can bring down insects and other small animals up to 3 m above the water's surface
[📹 buff.ly/3RfpGqz]
[read more: buff.ly/3Kn98uh]
514
El Rosario sanctuary near Ocampo, Michoacan, Mexico, hosts millions of Monarch Butterflies overwinter in conifer groves: a seasonal pause in one of the longest-known, multi-generational insect migrations on the planet buff.ly/3bTZoaE [source: buff.ly/3qj3ph3]
515
The size of the rings of Saturn compared to our planet [read more: buff.ly/3qjjkfB]
516
Hematite is a common iron oxide compound with the formula Fe₂O₃ and one of its varieties is the so called iron rose: orientated at various angles, it can result in a wonderful play of light from the crystal faces [source, Geology Wonders: buff.ly/3EZNOHE]
517
These are Camellia Japonica flowers, a genus of flowering plants in the family Theaceae. Perfectly formed, their rows are packed with luminous overlapping petals that gave them the monicker of 'pink perfection' [read more: buff.ly/2GSrG7G]
518
The nilgai or blue bull is the largest Asian antelope and is endemic to the Indian subcontinent. They stand 1–1.5 metres (3.3–4.9 ft) at the shoulder and their maximum weight recorded is 308 kilograms [read more: buff.ly/30hvV2e]
519
The perfect moment: How Robert Haas took a pic of flamingos while they gathered in the shape of a flamingo [source, hi-res: on.natgeo.com/2pOlPqT]
520
Alexander Fleming discovered penicillin but never tried to make an antibiotic out of it. It wasn't until a decade later that Howard Florey found Fleming little-known paper & realized the potential. Florey's work is estimated to have saved 200 million lives ow.ly/o0gs50A4YGY
521
Cheetahs don't roar, they meow.
The Felidae family is subdivided between "roaring cats" and "purring cats". The ability to roar is made possible by a special two-piece hyoid bone in the throat. Cheetahs only have a one-piece hyoid bone
[📹 meskal44: buff.ly/2VwrnGl]
522
Elijah Secrest is an artist from Columbus, Ohio and works mainly in metals. Among the things he makes, there are these impressive mechanical masks
TikTok: buff.ly/3CzPnxL
Instagram: buff.ly/3PWikqG
523
Alligators are notorious for their thick skin and well-armored bodies, yet their sense of touch is one of the most acute in the animal kingdom.
Coconut is a living example.
[📹 buff.ly/3KnSBpX]
[read more: buff.ly/3dZ1J8C]
524
Born #Today in 1918, Katherine Johnson was the mathematician whose calculations of orbital mechanics as a NASA employee were critical to the success of the first and subsequent U.S. crewed spaceflights buff.ly/2Fr9KwO
525
139 years ago #Today, the Krakatoa volcano erupted with the most violent blast known in the recorded history bit.ly/1PVUt6e
Astronomy, astronautics, meteorology, physics. Engineer, trying to build the big picture of #science via selected & curated pics, videos & links