Mars is a perfect inspiration for science fiction stories. It's recognisable and well-studied, yet it's also unique and far enough away to entice fantastical experiences.

Mars is a perfect inspiration for science fiction stories. It's recognisable and well-studied, yet it's also unique and far enough away to entice fantastical experiences. Hollywood has created several science fiction movies about a man going to Mars. The Martian is the closest movie that attempts to explain the problems humans will have while exploring the red planet. However, it ignores space radiation, the most challenging subject that astronauts face. Chandrayaan-3 has landed on the moon, and people are already excited about India's upcoming missions. Among the ideas, the mission to send a man to Mars remains on the top. ALSO READ | 'India is on the moon': ISRO chief S Somanath celebrates Chandrayaan-3's triumph on lunar landing The Indian Space Research Organisation launched the Mars Orbiter Mission in 2013. NASA also launched Perseverance, a small robotic helicopter Ingenuity, and associated delivery systems as part of NASA's Mars Exploration Program. While India and several other nations are working on various projects around Mars, no one has been able to send a human to the red planet. SpaceX CEO Elon Musk claims he will transport 1 million people to Mars by 2050. However, NASA scientist Dr Michelle Thaller explained that with the current technology, it is impossible to protect the astronauts travelling to Mars because the radiation from the solar flares and coronal mass ejections (CME) will kill human beings long before they reach. ALSO READ | Digital avatar, AI tech enable paralysed woman to speak Normal radiation exists in space. The ozone layer in the earth's stratosphere protects us by absorbing all the radiation. However, it expands multifold when a solar flare erupts on the Sun or a CME sweeps over an area in space. A recent discovery found a correlation between the dying clouds of Neptune and rising solar activity. If the Sun can impact Neptune, the farthest planet in our solar system, it can affect a spacecraft between Earth and Mars, Dr Thaller told The US Sun. The radiation can cause radiation poisoning, various types of cancer, degenerative and genetic disorders, and even death. NASA astronaut Stan Love told The US Sun that there's simply no chance of creating a human colony on Mars by 2050 until we discover a new technology that can protect us against deadly radiation. (With inputs from agencies) WATCH WION LIVE HERE

It's nearly impossible to send manned mission to Mars, NASA scientist explains why

The word space debris can commonly be interpreted as man-made objects in space that are no longer serving a useful purpose. This could include large and small defunct satellites, spent upper stages of rockets, etc. However, the larger objects are far lesser in number, and it is far easier to track and predict their movement, whereas the real threat to space assets is posed by millions of millimetre-sized space debris, said a top NASA scientist.&nbsp;

"The biggest objects 10cm and larger are tracked by the US Department of Defense, using their global sensor network. Currently, they track about 47,000 big objects in space, 27,000 of them are 10cm and larger. There are many more debris too small to be tracked, but still large enough to threaten human spaceflight and robotic space missions (satellites)" said Dr. Jer Chyi Liou, NASA Chief Scientist for Orbital Debris.&nbsp;

Also Read |&nbsp;<a href="http://www.wionnews.com/science/narrow-escape-international-space-station-dodges-space-debris-from-russian-anti-satellite-test-490218" hreflang="en">Narrow escape! International Space Station dodges space debris from Russian anti-satellite test</a>

He was speaking at a space science workshop organised by the Indian Space Research Organisation (ISRO) and Astronautical Society of India (ASI) in India, about Space Situational Awareness and Space Traffic Management. Sharing data about the orbital debris, Dr. Liou said that are 500,000 objects measuring 1cm or larger and over 100 million objects over the size of 1 millimetre.

Pointing out the hazards posed by objects measuring less than a millimetre, he said that even an object as small as 0.4 mm could penetrate some parts of the spacesuit of a spacewalking astronaut and cause serious damage to space missions.

Explaining why space debris of varying sizes is a constant cause of concern, Dr. Liou mentioned that the average impact speed between two orbiting objects in Low Earth orbit (up to 200 km above the earth's surface) is 10km/second. For context, that is ten times the speed of a bullet and any collision at such high impact speeds could prove catastrophic.&nbsp;

Watch |&nbsp;<a href="http://13.235.153.162/videos/expanding-problem-of-space-debris-what-is-space-junk-why-is-it-a-problem-472289" hreflang="en">Expanding problem of space debris: What is space junk? Why is it a problem?</a>

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Speaking of the total mass of orbital debris, he said that it had exceeded 9500 metric tonnes and 4000 tonnes of this was in Low Earth Orbit alone. He mentioned that the major man-made events that caused significant fragmentation of space debris were a Chinese Anti-Satellite missile test in 2007, an accidental collision between a Cosmos and an Iridium satellite in 2009 and the Russian Anti-Satellite Missile test in 2021.

He said that orbital debris was not distributed uniformly in space, as Low Earth Orbit (up to 2000 km from the Earth's surface) had the highest concentration, followed by the Geosynchronous orbit (around 36,000 km&nbsp;above the earth's surface). This is explained by the highest concentration of satellites operating in low earth orbit and the rapid growth in the number of cube satellites and constellations in the last two decades.

(With inputs from agencies)

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The word space debris can commonly be interpreted as man-made objects in space that are no longer serving a useful purpose. This could include large and small defunct satellites, spent upper stages of rockets, etc.

The word space debris can commonly be interpreted as man-made objects in space that are no longer serving a useful purpose. This could include large and small defunct satellites, spent upper stages of rockets, etc. However, the larger objects are far lesser in number, and it is far easier to track and predict their movement, whereas the real threat to space assets is posed by millions of millimetre-sized space debris, said a top NASA scientist. "The biggest objects 10cm and larger are tracked by the US Department of Defense, using their global sensor network. Currently, they track about 47,000 big objects in space, 27,000 of them are 10cm and larger. There are many more debris too small to be tracked, but still large enough to threaten human spaceflight and robotic space missions (satellites)" said Dr. Jer Chyi Liou, NASA Chief Scientist for Orbital Debris. Also Read | Narrow escape! International Space Station dodges space debris from Russian anti-satellite test He was speaking at a space science workshop organised by the Indian Space Research Organisation (ISRO) and Astronautical Society of India (ASI) in India, about Space Situational Awareness and Space Traffic Management. Sharing data about the orbital debris, Dr. Liou said that are 500,000 objects measuring 1cm or larger and over 100 million objects over the size of 1 millimetre. Pointing out the hazards posed by objects measuring less than a millimetre, he said that even an object as small as 0.4 mm could penetrate some parts of the spacesuit of a spacewalking astronaut and cause serious damage to space missions. Explaining why space debris of varying sizes is a constant cause of concern, Dr. Liou mentioned that the average impact speed between two orbiting objects in Low Earth orbit (up to 200 km above the earth's surface) is 10km/second. For context, that is ten times the speed of a bullet and any collision at such high impact speeds could prove catastrophic. Watch | Expanding problem of space debris: What is space junk? Why is it a problem? Speaking of the total mass of orbital debris, he said that it had exceeded 9500 metric tonnes and 4000 tonnes of this was in Low Earth Orbit alone. He mentioned that the major man-made events that caused significant fragmentation of space debris were a Chinese Anti-Satellite missile test in 2007, an accidental collision between a Cosmos and an Iridium satellite in 2009 and the Russian Anti-Satellite Missile test in 2021. He said that orbital debris was not distributed uniformly in space, as Low Earth Orbit (up to 2000 km from the Earth's surface) had the highest concentration, followed by the Geosynchronous orbit (around 36,000 km above the earth's surface). This is explained by the highest concentration of satellites operating in low earth orbit and the rapid growth in the number of cube satellites and constellations in the last two decades. (With inputs from agencies) WATCH WION LIVE HERE:

100mn+ millimetre-sized space debris a serious threat to astronauts, says NASA Chief Scientist

WION Exclusively talks to DR. Amitabha Ghosh, NASA Scientist from Washing D.C. over Indian lunar mission Chandrayaan-2.

WION Exclusive | In conversation with Dr Amitabha Ghosh, NASA Scientist from Washington

In a recent report, American space agency NASA has revealed that planet earth may actually face massive destruction in the year of 2036, by an asteroid strike.

According to NASA, the asteroid named Apophis will collide with Earth and it will have result in human extinction.

The asteroid was detected in 2004 by NASA and since then NASA has been observing the celestial body for the past 13 years, finally concluding that the deadly strike may occur in 2036.

The news has been confirmed by Duane Brown, a NASA official at the Washinton Headquarters. Reported by IB Times.

Steve Chesley, a NASA scientist, along with his fellow teammate Paul Khodas from the jet propulsion laboratory of NASA, learned the about the asteroid since 2009, and they have predicted the collision to precisely occur on April 13, 2036.

Dave Tholen and his collaborators at the University of Hawaii&#39;s Institue for astronomy made the observations and confirmed about the updated orbit of Apophis&nbsp;

&quot;Apophis was one of those heavenly bodies, which attracted the interest of the public, as it was discovered in 2004. Updated computational techniques and newly available data indicate the probability of collision of the Earth April 13, 2036,&quot; writes NASA on its website.

Russians scientists have also claimed that asteroid Apophis will have a close flyby in 2029 at a distance of 32,000 km&nbsp;from&nbsp;Earth, and during this time, even a small deviation in its trajectory will cause mass destruction.

Earlier the conspiracy theorists predicted the end of the world to be on November 19, 2017, following a strike by Nibiru or Planet X. However, it was turned out to be a failure.

According to David Meade, another conspiracy theorist, doomsday has already been triggered as of October 15, 2017. He also said that the world will witness seven-year tribulation period through a series of natural disasters including earthquakes, tsunamis, and volcanic eruptions. Meade also claimed that Nibiru has already approached the Earth&#39;s orbit

In a recent report, NASA has revealed that planet earth may actually face massive destruction in the year of 2036, by an asteroid strike

In a recent report, American space agency NASA has revealed that planet earth may actually face massive destruction in the year of 2036, by an asteroid strike. According to NASA, the asteroid named Apophis will collide with Earth and it will have result in human extinction. The asteroid was detected in 2004 by NASA and since then NASA has been observing the celestial body for the past 13 years, finally concluding that the deadly strike may occur in 2036. The news has been confirmed by Duane Brown, a NASA official at the Washinton Headquarters. Reported by IB Times. Steve Chesley, a NASA scientist, along with his fellow teammate Paul Khodas from the jet propulsion laboratory of NASA, learned the about the asteroid since 2009, and they have predicted the collision to precisely occur on April 13, 2036. Dave Tholen and his collaborators at the University of Hawaii's Institue for astronomy made the observations and confirmed about the updated orbit of Apophis "Apophis was one of those heavenly bodies, which attracted the interest of the public, as it was discovered in 2004. Updated computational techniques and newly available data indicate the probability of collision of the Earth April 13, 2036," writes NASA on its website. Russians scientists have also claimed that asteroid Apophis will have a close flyby in 2029 at a distance of 32,000 km from Earth, and during this time, even a small deviation in its trajectory will cause mass destruction. Earlier the conspiracy theorists predicted the end of the world to be on November 19, 2017, following a strike by Nibiru or Planet X. However, it was turned out to be a failure. According to David Meade, another conspiracy theorist, doomsday has already been triggered as of October 15, 2017. He also said that the world will witness seven-year tribulation period through a series of natural disasters including earthquakes, tsunamis, and volcanic eruptions. Meade also claimed that Nibiru has already approached the Earth's orbit

Asteroid Apophis to cause massive destruction on Earth in 2036, says NASA

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It's nearly impossible to send manned mission to Mars, NASA scientist explains why

100mn+ millimetre-sized space debris a serious threat to astronauts, says NASA Chief Scientist

WION Exclusive | In conversation with Dr Amitabha Ghosh, NASA Scientist from Washington

Asteroid Apophis to cause massive destruction on Earth in 2036, says NASA