2051
The Moon has a comet-like tail and every month it shoots a beam around Earth. This animation by @physicsJ based on simulations by Jody K. Wilson, shows how sodium atoms ejected from the lunar surface are affected by the Moon’s orbit around planet Earth buff.ly/3bvRQvc
2052
Back in April, endangered Sumatran orangutan Sekali gave birth to her second son at the Toronto Zoo.
This is the moment its mother got to hold him for the first time.
[video, full story: buff.ly/3Fstuk2]
2053
In the 1980s the U.S. Army figured that around half of the landmass on the planet was impassable by conventional wheeled or tracked vehicle, so it partnered with Ohio State University to build this: the Adaptive Suspension Vehicle
[source, read more: buff.ly/2R7nt3q]
2054
Lightning, for obvious reasons, is difficult to study. But scientists have built a device that enables them to make their own bolts of electrical power on demand. This is a rocket-triggered lightning launch site just, hit by lightning, 1M frames per second ow.ly/3udm30n5e7B
2055
Remarkable vapor cone on a Navy Blue Angels F-18
[read more: buff.ly/2lkUJEo]
[📹 Brandon Bruce: buff.ly/3exEmDw]
2056
3D augmented reality educational packages allow students to learn through a simple visual approach. This app for example explains the role of Earth's inclination in determining the seasons and the daylight duration
[read more: foxar.fr/en/education]
2057
This is how pregnancy shifts and moves the mother’s internal organs to make room for the baby
[interactive version: buff.ly/2YJy5tm]
[source, read more: buff.ly/3skUF9O]
2058
Great black-backed gulls are opportunistic feeders and apex predators: they will readily eat almost anything that they can swallow. This video by @irenemendezcruz shows one swallowing an entire rabbit [read more: buff.ly/3ps1oNA]
2059
The story of Grigori Perelman, the man who solved the the Poincaré Conjecture, a problem that took a century for mathematicians to solve. He was offered the prestigious Fields medal and $1,000,000 and he declined both [read more: ow.ly/siwv30nG3bX]
2060
The world's first astronomical site, Nabta Playa, was built in Africa and is 2,000 years older than Stonehenge. Located in the Sahara desert, the 7,000-year-old stone circle was used to track the summer solstice and the arrival of the annual monsoon season buff.ly/2AMeIY4
2061
Can you find a traditional 5-point star shape within this illustration? Look carefully, it may be hard to find, but once you find it, you'll always "see" it when you look at this picture
[source: buff.ly/2IMhDxG]
2062
We're accustomed to seeing smoke as something that floats in the air and it generally soars, but when the particles of burned substances have density which is higher than air's, the smoke can behave differently and drip down like water [source: buff.ly/30YIfY0]
2063
Hiccups are an involuntary movement triggered partly by the autonomic nervous system (which controls the heartbeat, pupil dilation & other involuntary bodily functions). This is true for animals too and specifically for cats buff.ly/3bOinTn [gif: buff.ly/2MwVw6f]
2064
This short, slightly sped up clip, shows an impressively geometric bird's eye view of a synchronised dance sequence taken from Footlight Parade (1933), by director and musical choreographer Busby Berkeley [source and full video: buff.ly/2rJJJHq]
2065
The marvelous hyerogliphics recounting stories of the King's victories, found on the wall of the second pylon (with a tourist for scale) at the Temple of Ramesses III, Medinet Habu, Luxor (XII century BCE) [read more: buff.ly/3xK41On]
2066
How many stars we can see in the night sky with the naked eye (Andromeda galaxy excluded)? About 9,096, or 0.000004 of all the stars in the Milky Way, approximately contained in that yellow circle
[read more: buff.ly/33VEEMK]
[image: buff.ly/30UnCNm]
2067
It takes 31 elements (four that come from conflict zones) to make a smartphone. This periodic table visulises their quantity and rarity
[source, read more: ow.ly/m16P30ncD9R]
2068
The World’s Smallest Snowman was fabricated from three 0.9 micron silica spheres and stands less than 3 microns tall [read more: buff.ly/2h4AHJB]
2069
This is the peculiar effect you obtain when you blow up a balloon, cover it with glue, let the glue dry and then pop the balloon
[source, antonxmi: buff.ly/3Vt1EdZ]
2070
This is what an fluorescent uranium ore looks like: it absorbs ultra-violet light and it reradiates it as visible light [full video and explanation by Veritasium: buff.ly/2Ih9q8H]
2071
How exactly does the mysterious assassin's teapot work? Interestingly it relies on surface tension and atmospheric pressure. Steve Mould explains
[source: buff.ly/3BkZ81F]
[more: buff.ly/3ETtdpE]
2072
For nearly 200 years we knew that spiders could move through the air & "fly" but we never understood exactly how. Only a recent series of studies found that spider's ballooning relies on the Earth eletricity field, or Global atmospheric electrical circuit buff.ly/2tXCxFF
2073
Do whales & dolphins play together? In recent years biologists recorded several cases of interspecies play, as this video filmed by Jaimen Hudson for BBC Earth seems to confirm [read more: buff.ly/3pyVNH8-] [video: buff.ly/3jvgeke-]
2074
In 1924, The Metropolitan Museum released two films about Arms and Armor. "A Visit to the Armor Galleries" was especially popular and includes this famous scene that shows the flexibility of a medieval armor
[video + read more: buff.ly/3w6xhj0]
2075
This experiment shows why erosion occurs more slowly when soil is paired with leaf debris or plants vs simple dirt. All the bottles have the same soil [video + explanation by YT channel funsciencedemos: buff.ly/2MMFwvu]
Astronomy, astronautics, meteorology, physics. Engineer, trying to build the big picture of #science via selected & curated pics, videos & links