Science

Solar Analemma plots the Sun's position in the sky at a specific place and time of day throughout the year. If you photograph the Sun from the same position at the same time for a year, you will find that it forms a slightly oblong figure 8, with one loop wider than the other. Sun's Analemma curve. Figure 8—why? Earth circles the Sun elliptically. Earth tilts 23.4 degrees as it orbits the Sun. These two components create the figure 8 Analemma curve. Axial Tilt As the Earth spins on its 23.4-degree axial tilt and orbits the Sun, the Sun seems to move up and down (North-South) in the sky. This creates the two figure 8 loops. The summer solstice generates the upper loop of the figure 8 Analemma when the Sun rises higher in the sky. After the summer solstice, the Sun'...

The space tourism company Virgin Galactic Holdings, which was established by Richard Branson, said on Thursday that its long-awaited commercial spaceflight service will debut later this month. As a result of this news, the company's shares increased by more than 55% in trading that took place after the bell. According to the corporation, the first spaceflight, which will be referred to as "Galactic 01," is scheduled to take place between June 27 and June 30. The corporation has stated that "Galactic 02" will follow in the beginning of August, and that following that, monthly spaceflights are anticipated. The corporation says "Galactic 01" will launch between June 27 and 30. Because of setbacks in the introduction of the company's commercial service, the value of a share of...

Ali Al-Qarni and Rayyanah Barnawi returned to Riyadh on Friday, roughly two weeks after concluding their historic scientific mission aboard the International Space Station (ISS). Al-Qarni and Barnawi were supported in their mission from Earth by Saudi astronauts Mariam Fardous and Ali Al-Ghamdi. The Saudi astronauts were greeted upon their arrival at King Khalid International Airport in Riyadh by a number of officials, including the Chairman of the Board of Directors of the Saudi Space Agency, Engineer Abdullah Al-Swaha. The Saudi astronauts of the AX-2 crew have concluded their scientific mission and returned to Earth aboard the SpaceX Dragon on May 31, after spending approximately ten days aboard the International Space Station. Barnawi and Al Qarni entered the space sta...

Plate tectonics, the movement and interaction of massive plates on Earth, shapes the world and creates life-sustaining geological features. It releases heat from Earth's interior, forming continents and other essential components. Plate tectonics during Earth's early years were unknown. Researchers have shown plate tectonics billions of years ago by studying zircons, microscopic mineral crystals. Mobile plate tectonics, required for habitability, was not present on Earth 3.9 billion years ago. Earth's sluggish lid regime released heat. We detected no plate tectonics when life began and for hundreds of millions of years following. "Our data suggests that exoplanets that harbor life do not necessarily need plate tectonics," says University of Rochester professor John Tarduno. T...

Clean, sustainable energy sources are needed more than ever now. Scientists and engineers are working hard to find new energy sources as we exhaust non-renewable resources and deal with climate change. Thermoelectric energy harvesting might change electricity generation and use. The Seebeck effect happens when a material's temperature differential causes electrons to flow from hot to cold, creating an electric voltage. Electronic gadgets and batteries can use this voltage. Thermoelectric materials—metals, semiconductors, and organic compounds—exhibit the Seebeck effect. ZT, the thermoelectric figure of merit, determines a material's efficiency. The material's electrical conductivity, thermal conductivity, and Seebeck coefficient determine its dimensionless ZT value. A substance ...

In recent times, it seems as though every other day a mind-blowing science story has emerged, all of which have shattered our minds. First, a terrifying black hole pointing directly at us was discovered, followed by the discovery of a massive opening in the sun and a continent that had been absent for 375 years. It comes out that a massive supply of water is stored 400 miles below the surface in ringwoodite rock. People just discovered a large ocean beneath the Earth's crust. Scientists have discovered that mantle rock stores water in a sponge-like state, which is not a liquid, solid, or gas, but a fourth state. 2014 saw the publication of the scientific paper titled "Dehydration melting at the top of the lower mantle," which outlined the findings. "The ringwoodite i...

University of Sydney and Fudan University researchers found human brain impulses that spontaneously form spirals over the outer layer of neural tissue. The research, published today in Nature Human Behaviour, suggests that these ubiquitous spirals, brain signals found on the cortex during resting and cognitive states, organize brain activity and cognitive processing. Senior author Associate Professor Pulin Gong from the School of Physics in the Faculty of Science said the finding might enhance powerful computing devices inspired by the inner workings of the human brain. The discovery expands our understanding of the brain and its basic functioning. Examining their involvement might help medical researchers comprehend brain illnesses like dementia. “Our study suggests that gain...

Media claims say stem cell researchers generated synthetic human embryos. These embryos were produced from embryonic stem cells without sperm or ova. This week's International Society for Stem Cell Research annual meeting in Boston highlighted this finding, which might help scientists understand human development and genetic illnesses. Professor Magdalena Żernicka-Goetz of Cambridge University and the California Institute of Technology revealed the findings. Reprogramming human embryonic stem cells produced these human-like embryos, Yernicka-Goetz told the gathering. How does this affect science and ethics? One stem cell creates each synthetic human embryo. Āernicka-Goetz explained how her team produced the synthetic embryos to "gastriculation," a step slightly beyond the 14-d...

Approximately 375 years ago, geoscientists discovered a continent that had been lurking in plain sight. There has been speculation throughout history regarding the existence of a continent known as Zealandia or Te Riu-a-Mui in Mori. The extent of Zealandia, according to TN News, is 1.89 million square miles. Over 500 million years ago, it was a part of a supercontinent dubbed Gondwana, which included the majority of Western Antarctica and Eastern Australia. It is believed to have been discovered in 1642 by the Dutch merchant and sailor Abel Tasman, who was eager to find the "Great Southern Continent." Despite being unable to locate the new land, he encountered the local Mori, who were initially dissatisfied with his arrival. Nonetheless, they provided valuable information ...