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Good Day Friends Latest Questions

Obyno
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President Biden evacuated after plane entered airspace near his home. Here is what happened

A small private airplane mistakenly entered restricted airspace near President Joe Biden’s Delaware vacation home on Saturday, prompting the brief evacuation of the president and first lady, the White House and the Secret Service said.Read more

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  1. Weird

    That's scary

    That’s scary

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Sophia
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What is the deadliest earthquake in history?

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

earthquakeeconomyhaitihealthtravel
  1. Matt

    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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Yesenia
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Why do astronauts float around in space? Is there air in space?

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

astronautslifestylespacetechtravel
  1. Eric

    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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Suzzy
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How long can a human live in space and survive?

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

healthlifestylespacetravel
  1. Ruben

    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.

    The physical effects of space

    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.

    The risk of radiation

    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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Jade
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Begginer
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Richard Branson traveled to suborbital space July 11, 2021. What is orbital and suborbital spaceflight?

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

celebrityjeff bezosrichard bransonspacetechtravel
  1. Matt
    Richard Branson traveled to suborbital space July 11, 2021. What is orbital and suborbital spaceflight?

    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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Urchman
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How long does it take to get to space?

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

lifestylesciencespacetechtravel
  1. Mike

    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.

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Obyno
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Watch video: Nigeria’s Chief of Army Staff Ibrahim Attahiru dies in military plane crash

Nigeria’s Chief of Army Staff Ibrahim Attahiru has been killed after his plane crashed in the country’s north, an air force spokesman said. Read more

healthmilitarynigeriaplane crashtravel
  1. Chidowski

    Naija is a huge joke! A very sad loss

    Naija is a huge joke! A very sad loss

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Microsoft co-founder Bill Gates and his wife Melinda announced on Monday via joint twitter account that they are ending their marriage of 27 years. Shortly after the announcement, Melinda filed a petition for divorce at King County superior court in Seattle, Washington. ...

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Drunk Florida woman arrested after offering lap dances to strangers, asked police if they want to “bang”

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Italy places public employees under investigation after a 67-year-old who never worked was paid $650,000 in salary
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Italy places public employees under investigation after a 67-year-old who never worked was paid $650,000 in salary

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