Space World

05/01/2025

05/01/2025

💯💯

04/01/2025

Benjamin Lay was indeed a bold and unconventional figure in the 18th-century abolitionist movement. Lay, a Quaker, was known for his passionate and sometimes dramatic actions to raise awareness about the horrors of slavery. One of his most famous acts was when he "kidnapped" the child of slaveholders in order to illustrate the emotional trauma African slaves experienced when they were separated from their loved ones, especially when relatives were sold overseas. He wanted to make the point that the pain of families being torn apart by slavery was real and deeply felt.

This act, though controversial, was part of Lay's larger effort to challenge and shame the Quaker community and the broader society into opposing slavery. He lived in Pennsylvania, where he was a vocal advocate for the emancipation of slaves, and his actions helped draw attention to the cause in a way that was both personal and deeply emotional.

04/01/2025

Saudi Arabia’s Rise Tower: A 2-Kilometer Tall Skyscraper Set to Redefine Skylines by 2060

Saudi Arabia is taking architectural ambitions to unprecedented heights with its plans to construct the Rise Tower in Riyadh, a 2-kilometer-tall skyscraper that aims to be the tallest building in the world. Towering at more than double the height of Dubai’s Burj Khalifa (828 meters), the Rise Tower is set to symbolize the Kingdom’s futuristic vision and redefine architectural possibilities.

A Tower Beyond Limits

Designed to soar 6,562 feet into the sky, the Rise Tower will be the centerpiece of the North Pole Project, a massive mixed-use development spanning 306 square kilometers in northern Riyadh. This ambitious project seeks to harmonize modern urban living with nature by incorporating pedestrian-friendly streets, bike lanes, and lush green public spaces. Sustainability is at the heart of this development, with the tower and its surroundings powered by renewable energy, including solar.

A Vision Backed by Scale and Innovation

The Rise Tower’s estimated construction cost is a staggering $5 billion, and Saudi Arabia has invited some of the world’s leading architectural firms to participate in its design competition, with an entry fee of $1 million. The project’s site is located west of King Khalid International Airport, and global consulting giant EY has already conducted a feasibility study to ensure its viability.

Part of a Larger Ambition

The Rise Tower is just one of Saudi Arabia’s many bold initiatives aimed at diversifying its economy and enhancing its global standing. It aligns with the Kingdom’s broader Vision 2030, which includes other transformative projects like the King Salman International Airport and NEOM’s mega-developments, such as The Line (a futuristic linear city), Trojena (a mountain tourism destination), Oxagon (a high-tech industrial hub), and Sindalah (a luxury island resort).

A Feat of Engineering and Symbolism

The Rise Tower is expected to be more than just a skyscraper; it is set to become a beacon of modernity and innovation. Combining cutting-edge technology and environmentally sustainable practices, it will showcase the Kingdom’s aspirations to lead in global architectural and technological advancements.

Completion Timeline

While the exact completion date hasn’t been confirmed, reports suggest the Rise Tower could be ready by 2060, considering the scale and complexity of the project. Upon completion, it will stand as a testament to Saudi Arabia’s determination to redefine skylines and push the boundaries of what architecture can achieve.

The Rise Tower is not just a building; it is a vision. Once completed, it will solidify Riyadh’s position as a global hub for innovation and ambition, creating a landmark that reaches for the stars—quite literally.

04/01/2025

The name "Samsung" (삼성) indeed means "three stars" in Korean. The founder of Samsung, Lee Byung-chul, chose this name in 1938 for his company to symbolize strength, greatness, and longevity. The three stars represent the vision of the company being as powerful and everlasting as the stars in the sky. Samsung's growth and success have certainly aligned with this vision, as it has become one of the largest and most influential technology companies in the world.

04/01/2025

What was Elasmotherium?
Weighing up to 3.5 tonnes, it lived on the Eurasian grasslands ranging from southwestern Russia and Ukraine to Kazakhstan and Siberia.

Eventually the species went extinct - but exactly when that happened has been in doubt.

For those studying the fauna of the last Ice Age, one of the most significant events of the period was the megafaunal extinction. It saw the disappearance of many large, iconic species such as the woolly mammoth, the Irish elk and the sabre-toothed cat.

Prof Adrian Lister, Merit Researcher at the Museum, says, 'This megafaunal extinction event didn't really get going until about 40,000 years ago. So Elasmotherium with its apparent extinction date of 100,000 years ago has not been considered as part of that same event.'

Over the last few years, however, there have been some hints that this extinction date for E. sibiricum might be wrong.

'We dated a few specimens - such as the beautiful complete skull we have at the Museum - and to our surprise they came in at less than 40,000 years old,' explains Adrian.
Ice Age giants
Elasmotherium sibiricum was a true Ice Age giant, weighing up to twice as much as a modern rhino.

Unusually, despite its massive size and prominent shoulder hump, it is thought that the Siberian unicorn was actually adapted to running at speed.

'The rhino's anatomy suggested that it lived in pretty open, grassy plains, grazing almost entirely on grass,' explains Adrian. 'Its unusual teeth look very strongly adapted for that kind of grazing as well.'

By studying the stable isotope ratios in the rhino's teeth, which involves looking at the levels of different carbon and nitrogen isotopes and then comparing them to different plants, the researchers were able determine what the animals were eating. The results confirm that the Siberian unicorn was most likely grazing on tough, dry grasses.

Regarding how they behaved, however, researchers have to rely on living animals.

'Modern rhinos tend to be rather solitary and spread out in their habitat,' says Adrian. 'Combined with Elasmotherium's restricted geographical range, it might have been quite a rare animal.'
The last unicorn
This natural scarcity may have been one of the factors that tipped the Siberian unicorn into extinction some 39,000 years ago, around the same time that Neanderthals went extinct and some time before cave bears and spotted hyenas were last seen in Europe.

This means that the animals would have been sharing Eurasia with both modern humans and Neanderthals, but as Adrian explains, it is unlikely that they were hunted into extinction.

'There is no evidence at all that people had anything to do with it. You can't rule it out, but we don't have any archaeological association of this animal with people in any way at any sites known so far,' he says.

Instead it is much more probable that their extinction was the result of the dramatic fluctuations in climate that were occurring during this time period, coupled with the specialised grazing lifestyle and low population numbers.

'The environment where the animal was living seems to have changed quite considerably around the same time it went extinct,' explains Adrian, 'so it is quite plausible that if it were a rare animal to start with then it would have been at a relatively high risk of extinction.'

The first DNA
Finally, Adrian's colleagues in Australia were able to extract DNA from some of the fossils, the first time any DNA has ever been recovered from E. sibiricum.

This has helped to settle a debate about where the Siberian unicorn, along with all other members of the Elastrotherium genus, fit on the rhino evolutionary tree.

It turns out that the ancient group split from the modern group of rhinos roughly 43 million years ago. This means that the Siberian unicorn was the last species of a highly distinctive and ancient linage when it went extinct on the Eurasian plains only a few tens of thousands of years ago.

02/01/2025

The H2Rescue truck set a record, traveling 1,806 miles (2,906 km) on one tank of hydrogen. Built by Accelera (Cummins) with DOE support, it’s designed for disaster relief and emergencies.
Powered by a Cummins Accelera fuel cell engine and a 250-kilowatt motor, the truck used 168 kg (370 lbs) of hydrogen from its 175 kg (386 lb) tank. It traveled at 50–55 mph (80–89 km/h) on public roads, emitting only water.
The trip saved 664 lbs (301 kg) of CO2 compared to a gasoline truck, says the DOE. It can provide 25kW of power for 72 hours without refueling.
Weighing 33,000 lbs (14,969 kg), the truck carries supplies to disaster zones, produces 1 gallon (3.8 liters) of water per hour, and could save 1,825 gallons (6,908 liters) of gasoline yearly, reducing emissions by 2.5 metric tons.

02/01/2025

💯💯💯

02/01/2025

02/01/2025

Rise Tower is a skyscraper construction project proposed in Riyadh, Saudi Arabia. It is planned to be the first 2 km tall building and would be the world's tallest building

01/01/2025

01/01/2025

What happened in last year
Well happy new year 2025 ゚

31/12/2024

Apple is about to launch smart doorbell in 2025 ゚