1226
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]
1227
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]
1228
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]
1229
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]
1230
#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]
1231
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]
1232
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]
1233
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]
1234
#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]
1235
#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]
1236
The final moments of #DART and the reaction from the team at John Hopkins University Applied Physics Lab
[video: buff.ly/3CcCfho]
1237
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]
1238
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]
1239
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]
1240
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]
1241
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
1242
Bright idea for a staircase [photo credits: Nils Eisfeld, buff.ly/2KtMG3y]
1243
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]
1244
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]
1245
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]
1246
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]
1247
Broadcasting the sound of a healthy coral reef on underwater speakers in dead areas along the Great Barrier Reef resulted in life returning and thriving. Twice as many fish visited those areas vs spots without speakers [read more: buff.ly/38J0qnr]
1248
This clip by YouTube channel JayPrehistoricPets shows some Aldabra giant tortoises, which can reach 122 cm of carapace length and with an average weight of 250 kg
[read more: buff.ly/3GfJyUV]
[📹 JayPrehistoricPets: youtu.be/v5pOt1-2bnI]
1249
This is the raccoon dog, the only extant species in the genus Nyctereutes. It's a close relative of true foxes and the only canid known to hibernate during the winter [read more: ow.ly/kEtj30nrQoa]
1250
This video shows one of the hundreds of salt lakes in the Siwa Oasis region of Egypt whose quality is you don't need to know how to swim
[why salt makes things float: buff.ly/3nesLbR]
[📹 lokoskales: buff.ly/3dm7eKW]
Astronomy, astronautics, meteorology, physics. Engineer, trying to build the big picture of #science via selected & curated pics, videos & links