1876
Needlefish, like all ray-finned beloniforms, are capable of making short jumps out of the water at up to 60 km/h (37 mph)
[read more: buff.ly/2KJOggq]
1877
The eruptions of Mount Etna in Sicily are often spectacular and part of the show always comes from the ash columns: this is an impressive explosion captured in December 2015 photographer Fernando Famiani [source, read more: buff.ly/2KlkBLA]
1878
The story of the bees in Brooklyn who produced red honey, which led to an investigation at a nearby marachino cherry factory, which led to the discovery of a marijuana farm beneath the factory [read more: ow.ly/q4i330nsLHU]
1879
Momentum cancellation: a ball fired at 50 mph out of a cannon from a truck going exactly at 50 mph in the opposite direction, has its velocity (and therefore momentum) cancelled
[source, full video, MythBusters: buff.ly/2FB7PoC]
1880
Bright idea for a staircase [photo credits: Nils Eisfeld, buff.ly/2KtMG3y]
1881
An incredible capture of 81 skydivers in a ‘canopy formation’. The dive occurred on November 25, 2006 and was planned by a group called CF World Record 2005. Jumpers dropped in from an altitude of 7,300m descending at an incredible 300 m per minute buff.ly/2KpGN7l
1882
The Kamov Ka-50, which entered service in 1995, was the first production helicopter with an ejection seat. The main rotors are equipped with explosive bolts to jettison the blades moments before the seat is fired
[read more: buff.ly/39dRojY]
1883
In 2014, in a rock slab in China dating back some 120 million years, scientists discovered the skeletons of 24 "baby dinosaurs" called psittacosaurs and that of an older individual, suggesting a caretaker was "babysitting" the nestlings [read more: buff.ly/3opuvBW]
1884
The amazing view of NASA DART spacecraft impacting on the asteroid moonlet Dimorphos captured by the ATLAS telescope in South Africa
[read more: atlas.fallingstar.com/home.php, buff.ly/3Cd4X1J]
1885
The scale of Dimorphos
The 160-m diameter Dimorphos asteroid compared to Rome's Colosseum. NASA's DART spacecraft collided with Dimorphos last night
[source, read more: buff.ly/3SCJyog]
1886
The final moments of #DART and the reaction from the team at John Hopkins University Applied Physics Lab
[video: buff.ly/3CcCfho]
1887
#ICYMI NASA's Double Asteroid Redirection Test (DART) impacted the 'moonlet' Dimorphos in the Didymos asteroid system on September 26, 2022 – these are the spacecraft's final moments
[read more: buff.ly/3Sj7ahI]
[full coverage: buff.ly/3f0UNbC]
1888
#Today in 1983, Stanislav Petrov, an officer of the Soviet Air Defence Forces, correctly identified as a false alarm an early warning about an American multiple ICBM attack, possibly avoiding an escalation to a full-scale nuclear war [read more: bit.ly/2B7vhHJ]
1889
This roundabout in Khobar City, Saudi Arabia uses the barrier grid animation principle to transform into a macroscopic kinegram and make the horses appear as gallopping
[read more: buff.ly/3648EXo]
[source: buff.ly/3BTqHi2]
1890
Photographer Camden Thrasher was shooting a demonstration of US Navy fighter jets when he captured a remarkable close-up photo of a plane creating “shockwave lines” as it approached the speed of sound
[read more: buff.ly/3CdWNq8]
[author's IG: buff.ly/3Slspj1]
1891
On top of the 8 million human lives, 600 million trees, 200,000 hectares of land, 22 billion tons of water and 84 million tons of CO₂ that the tobacco industry costs every year, cigarette filters contain microplastics
[read more: buff.ly/3x6g0r0]
1892
#Today, Jupiter will come the closest to Earth it's been in 59 years. The last time Earth was this close to the giant – just 590 million kilometers away – it was October 1963. This will make observations particularly favorable.
[read more: buff.ly/3Ssnvk8]
1893
This illustration shows what would happen if all of the water on or near the surface of the Earth were bunched up into a ball. The radius of this ball would be only about 700 km, less than half the radius of the Earth's Moon [read more: buff.ly/3xRTaU3]
1894
In 2013 a special water transport traveled from Rotterdam to Amsterdam. A timelapse camera took 30.000 photos every 3 seconds, resulting in a unique and stunning view of the old Dutch waterways, in 4K [source, full video: buff.ly/3fW0ULJ]
1895
In this video on NightHawkInLight, Ben demonstrates how a "Lubor’s lens" works. This is a type of Fresnel lens that takes the light coming into it from the back at obtuse angles and projects it forward in the front of the lens
[video: buff.ly/3lBAxgO]
1896
This is what a spacecraft's wall looks like after an impact with a space debris of ~1.2 cm Ø at a speed of 21,760 km/h
[source, read more: buff.ly/2oIi8U8]
1897
Grafting is a horticultural technique whereby tissues of plants are joined so as to continue their growth together. This video by Deepa Doura shows a standard process to conduct it [full video: buff.ly/3GwR9yH] [read more: buff.ly/3lAaQxa]
1898
The harpy eagle is among the world's largest extant species of eagles. Mean talon size is 8.6 cm in males, and 12.3 cm in females. This photo by Jaime Culebras with details by Daniel Hyde show the sheer size of its talon [sources: buff.ly/3Ewa7EQ, buff.ly/3drDD2s]
1899
Monkeyland is the world's first free roaming multi-specie primate sanctuary in Plettenberg Bay, South Africa. This is Siam, a lar gibbon who became popular for crossing a suspension bridge with a balance bravery
[video: buff.ly/2ONyZAM]
1900
Siphon tubes are a basic implement used in irrigation to transfer water over a barrier (such as the bank of a raised irrigation canal), using the siphon principle
[read more: buff.ly/39e71b2]
[📹: buff.ly/3Dlonid]
Astronomy, astronautics, meteorology, physics. Engineer, trying to build the big picture of #science via selected & curated pics, videos & links