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My heart goes out to people in Haiti for the 7.2 magnitude earthquake on Saturday August 14 that reportedly killed more than 1,400. There has just been much news about earthquakes at different places recently. It’s terrifying! Question: What ...Read more
When you watch videos of astronauts in space, they are seen floating. Also, when Richard Branson and his crew traveled to the space, the video showed them floating. When Jeff Bezos and his crew traveled to the ...Read more
There is no gravity in space. That is why anyone who goes there, float. The farther you get from Earth, the less the gravitational force is. When astronauts are ins space, they are so far from the Earth that gravity is so small. This is why NASA calls it microgravity. In space, no one can hear youRead more
There is no gravity in space. That is why anyone who goes there, float. The farther you get from Earth, the less the gravitational force is. When astronauts are ins space, they are so far from the Earth that gravity is so small. This is why NASA calls it microgravity.
In space, no one can hear you scream. You know why? Because there is no air in space. No air, no sound. No air, no gravity. Simple.
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A new era opened on Sunday July 11 when Virgin Galactic founder Richard Branson flew alongside Virgin Galactic employees Beth Moses, Sirisha Bandla, and Colin Bennett above 80 km, NASA’s definition of space. In doing so, these pilots and ...Read more
According to labmate: To date, the longest continuous amount of time a human has spent in space is 437 days. This feat was lived out by Russian astronaut Valeri Polyakov. When it comes to total number of days spent in space, fellow Russian Sergei Krikalev takes the cake, with over 803 days in space,Read more
According to labmate:
To date, the longest continuous amount of time a human has spent in space is 437 days. This feat was lived out by Russian astronaut Valeri Polyakov. When it comes to total number of days spent in space, fellow Russian Sergei Krikalev takes the cake, with over 803 days in space, spread out over six flights.
So what makes it so difficult to survive in space? For starters, the human body has evolved to function under gravitational conditions. This means that space is a harsh condition for humans. As muscles constantly work against gravity on planet Earth, they start to deteriorate in space. This includes the heart, which shrinks.
As bones are no longer needed to support the body’s weight they neglect the need to maintain themselves. While bone tissue is still absorbed it’s not rebuilt, which can cause fractures and kidney stones. Research has also shown that extended periods in space can dysregulate the immune system, and leave astronauts vulnerable to pathogens, hypersensitivity and unwanted autoimmune responses.
Radiation is another serious threat, with astronauts continuously exposed to multiple forms of energy, including solar radiation, galactic cosmic radiation, geomagnetically bound radiation and solar cosmic particles. Overexposure can trigger serious cell mutation, leading to cancer, epigenetic effects and even death. Radiation can also impair bodily functions, causing bone marrow to deteriorate, the immune system to weaken and cataracts to develop in the eyes. Even with next generation shielding materials to protect them, astronauts are still at risk of secondary radiation from gamma rays and energetic neutrons.
While radiation can be a serious health problem, light also plays a major role in modern science. ‘Light Source Characterisation in Life Sciences’ explores photonics in further detail, and its role in a myriad of life science arenas, including biological research, biomedical instrumentation and agriculture. From effective UV disinfection and optimal aquarium illumination to accurate blood oximetry, success depends largely on the ability to understand the performance of certain light sources.
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Richard Branson, the billionaire founder of Virgin group rode his company’s SpaceShipTwo rocket plane into the skies over New Mexico on July 11, 2021, thereby becoming the first billionaire to take a rocket-powered ride on his own company’s spaceship to ...Read more
According to Space.com, orbital and suborbital flight are common terms in the spaceflight industry that sound very similar, but they mean different things. The main difference between orbital and suborbital flight is the speed at which a vehicle is traveling. An orbital spacecraft must achieve whatRead more
According to Space.com, orbital and suborbital flight are common terms in the spaceflight industry that sound very similar, but they mean different things.
The main difference between orbital and suborbital flight is the speed at which a vehicle is traveling. An orbital spacecraft must achieve what is known as orbital velocity, whereas a suborbital rocket flies at a speed below that.
Orbital velocity is the speed that an object must maintain to remain in orbit around a planet, according to an explainer from the Austrian private aerospace company Orbspace. A good way to picture this is to imagine a ball being thrown at ground level — at a normal throwing speed, the ball travels in an arc through the air before hitting the ground. But say you were to put a little rocket on the ball that made it travel so fast that its arc shape would perfectly match the curvature of the Earth. At that point, the ball would have achieved orbit and would fly at a consistent height above our planet.
To orbit 125 miles (200 kilometers) above Earth, a spacecraft must travel at a screaming 17,400 mph (28,000 km/h). “It is actually this incredibly high speed which makes orbital space flight technically so complex and therefore expensive,” Orbspace representatives wrote. One of the main reasons airplanes can’t fly in space is that they don’t go fast enough.
Suborbital flight, in contrast, requires much lower speeds. A suborbital rocket doesn’t have the power to achieve orbit. Instead, it will fly up to a certain height that depends on its speed, and then come back down once its engines are shut off. To reach 125 miles above Earth, a suborbital vehicle needs to fly at a relatively sedate 3,700 mph (6,000 km/h), although that’s still much faster than a commercial airplane, which flies at around 575 mph (925 km/h).
At the top of their flight arc, passengers in a suborbital vehicle will still achieve a few minutes of weightlessness. They are, in fact, falling back toward Earth, but they are experiencing freefall, similar to an airplane completing parabolic maneuvers to simulate zero gravity.
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At least 17 people have been reported dead after a Philippine Air Force plane crashed in the southern part of the country.Defense Secretary Delfin Lorenzana said rescue efforts are ongoing. He said the aircraft had 92 people on ...Read more
Jeff Bezos, the billionaire founder of Amazon.com announced on Monday he will fly to space in July. Bezos said he and his brother Mark will fly from his rocket company Blue Origin spacecraft, according to the source.Read more
The shortest distance between Earth and space is about 62 miles (100 kilometers) straight up, which by general accord is where the planet's boundary ends and suborbital space begins.
The shortest distance between Earth and space is about 62 miles (100 kilometers) straight up, which by general accord is where the planet’s boundary ends and suborbital space begins.
See lessLeading defense tech startup Anduril has developed a new product designed to take-on the proliferation of low-cost, high-powered aerial threats. The product is called Roadrunner, a modular, twin-jet powered autonomous vertical take-off and landing (VTOL) air vehicle that’s designed for ...
WhatsApp is making its Chat Lock tool even more secure by introducing Secret Codes that will hide private chat rooms. The way it currently works, Chat Lock takes conversations and places them into a separate folder that can only be ...
OpenAI CEO and cofounder Sam Altman at the company’s first DevDay conference on November 6. Justin Sullivan/Getty Images ChatGPT turned one today. When it was first launched, OpenAI leaders framed it as a “low-key research preview.” Some employees didn’t even realize ...
Humans have been recording earthquakes for nearly 4,000 years. From the ones we know about, the deadliest by far happened in China in 1556 A.D. On January 23 of that year, a powerful quake rocked the province of Shaanxi as well as the neighboring province of Shanxi, killing an estimated 830,000 peopRead more
Humans have been recording earthquakes for nearly 4,000 years. From the ones we know about, the deadliest by far happened in China in 1556 A.D. On January 23 of that year, a powerful quake rocked the province of Shaanxi as well as the neighboring province of Shanxi, killing an estimated 830,000 people. Source: History.com
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