Scientists have said that this asteroid will pass safely from a distance of about 3.4 million kilometers from the Earth.
After the God of destruction, asteroid Apophis, and the largest asteroid in the year 2021, NASA has detected another asteroid heading towards the Earth with a much faster pace than the previous ones.
The asteroid is the size of a football field and that is why NASA scientists are keeping a close eye on the asteroid named AF8. According to scientists, this asteroid will pass near the Earth on May 4.
NASA estimates that this asteroid ranges in size from 260 to 580 meters. This asteroid was first discovered by scientists in the month of March.
The US Space Agency said that this Asteroid AF8 is much smaller than other large asteroids that have passed by the Earth in space, but it is still very dangerous. The agency said that the 2021 AF8 asteroid is passing near the Earth at a speed of 9 km per second.
Scientists have said that this asteroid will pass safely from a distance of about 3.4 million kilometers from the Earth.
Even after this, astronomers are closely monitoring this Apollo-based asteroid. This asteroid has been classified by NASA as a potentially dangerous asteroid.
NASA’s Sentry System already monitors such threats. There are currently 22 such asteroids that have little chance of hitting the Earth for the coming 100 years.
The first and largest Asteroid 29075 (1950 DA) in this list which is not going to come till 2880. It is also three times the size of the Empire State Building in the United States and was once believed to have the highest probability of hitting the Earth.
What are Asteroids?
Asteroids are rocks that revolve around the sun like any planet, but are much smaller than planets in size.
Most of the asteroids in our solar system are found in the asteroid belt in the orbit of Mars and Jupiter. Apart from this, they rotate in the orbit of other planets and revolve around the sun as well.
Astronomers have found the safest place to live in the galaxy after much research.For this, scientists had to investigate the entire galaxy. Surprisingly, the planet we humans are living on.
अंतरिक्ष विज्ञानियों ने काफी रिसर्च के बाद आकाशगंगा में रहने के लिए सबसे सुरक्षित स्थान खोज लिया है. इसके लिए वैज्ञानिकों को पूरे आकाशगंगा की जांच करनी पड़ी. हैरानी की बात ये है कि हम इंसान जिस ग्रह पर रह रहे हैं, वो काफी ज्यादा सुरक्षित स्थान पर हैं. लेकिन अगर आप पिछले साल की कोरोना महामारी से ऊब कर किसी और ग्रह पर जाने की योजना बना रहे हैं तो यकीन मानिए आपके लिए आकाशगंगा का केंद्र सबसे ज्यादा सुरक्षित स्थान होगा.
इटली के इनसुब्रिया यूनिवर्सिटी (Insubria University) के अंतरिक्ष विज्ञानियों की टीम ने इस स्टडी को किया है. इस टीम के प्रमुख और एस्ट्रोनॉमर रिकॉर्डो स्पिनेली ने कहा कि अंतरिक्ष में हुए विस्फोट (Cosmic Explosion) की वजह से कई जीवों का अंत हो चुका है. अंतरिक्ष के विस्फोट यानी सुपरनोवा, गामा-किरणों का फूटना, उच्च-ऊर्जा वाले कणों का फैलना और रेडिएशन DNA को फाड़ सकते हैं, ये जीवन को खत्म कर सकते हैं.
इन खतरों से सुरक्षित स्थान को खोजना आसान नहीं था. आकाशगंगा में कई ऐसी जगहें हैं जो ऐसे खतरों से भरी पड़ी हैं. रिकॉर्डो कहते हैं कि ताकतवर कॉस्मिक एक्सप्लोशन को अनदेखा नहीं कर सकते. ये जीवन के अस्तित्व के लिए खतरा है. इन विस्फोटों की वजह से गैलेक्सी में जीवन का विकास बाधित हुआ है
रिकॉर्डो और उनकी टीम ने सबसे दो चीजें खोजी. सबसे खतरनाक और सबसे सुरक्षित स्थान. इसके लिए इन लोगों ने आकाशगंगा के 11 बिलियन साल पुराना इतिहास खंगाला. जिससे पता चला कि हम अभी आकाशगंगा में जहां रह रहे हैं वो सबसे सुरक्षित बेल्ट में आती है. जबकि करोड़ों साल पहले आकाशगंगा के निर्माण के समय इसका सबसे सुरक्षित स्थान इसका आखिरी छोर थे.
किसी ग्रह को रहने योग्य बनने के लिए जरूरी है वहां पर उसके तारे के साथ सामंजस्य हो. यानी सूरज से धरती को पर्याप्त गर्मी मिले. न कम न ज्यादा. इसके अलावा अंतरिक्ष से आने वाली मुसीबतों से ग्रह दूर रहे. जैसे- रेडिएशन, सुपरनोवा, गामा किरणों का बहाव, उच्च ऊर्जा वाले कण और सौर तूफान. इन सारे खतरों से फिलहाल धरती सुरक्षित है. इसलिए ऐसा कहा जा सकता है कि हम आकाशगंगा के सबसे सुरक्षित स्थानों में से एक में रह रहे हैं.
सुपरनोवा, गामा किरणों का विस्फोट, खतरनाक स्ट्रीम्स, उच्च-ऊर्जा वाले कण ये सारे प्रकाश की गति से बहते हैं. अगर इनके सामने किसी भी प्रकार का जीवन आता है तो ये उसे नष्ट कर देते हैं. इतना ही नहीं ऐसे ग्रहों को भी खत्म कर सकते हैं जिनपर जीवन है या वो निर्जीव ग्रह हैं. इसलिए वैज्ञानिकों को लगता है कि हमारे सौर मंडल में बाकी ग्रहों पर भी जीवन रहा होगा लेकिन वो इन्हीं वजहों से खत्म हो गया हो.
रिकॉर्डो कहते हैं कि अंतरिक्षीय विस्फोट के आसपास के ग्रहों पर तो जीवन का पूरा सफाया हो गया होगा. 45 करोड़ साल पहले ओर्डोविसियिन (Ordovician) नाम का एक ग्रह था, जिसे दूसरी धरती कहा जाता था. इस पर मास एक्सटिंक्शन (Ordovician Mass Extinction) यानी सामूहिक विनाश होने की वजह आसपास हुआ गामा-किरणों का विस्फोट रहा होगा. अब आकाशगंगा में इसके बचे हुए हिस्से ही मिलते हैं. धरती बच गई क्योंकि इसकी दूरी और सौरमंडल का प्रभाव इसे बचा ले गया.
वैज्ञानिकों ने जानलेवा रेडिएशन को लेकर भी मॉडल्स और नक्शे बनाए. पता चला कि शुरुआत में गैलेक्सी का अंदर वाला हिस्सा, जो कि 33 हजार प्रकाशवर्ष बड़ा था, वह रहने योग्य नहीं था. क्योंकि यहां पर ऐसे तारे थे जिनका रेडिएशन बेहद खतरनाक था. यहां विभिन्न प्रकार के विस्फोट होते रहते थे. लेकिन आकाशगंगा का बाहरी इलाका सुरक्षित था
600 करोड़ साल पहले हमारी आकाशगंगा का स्टर्लाइजेशन (Sterilization) यानी सफाई हो रही थी. जैसे-जैसे गैलेक्सी की उम्र होती चली गई, विस्फोट होने कम हो गए. आज की तारीख में आकाशगंगा के अंदर घेरा है जो इसके केंद्र से 6500 प्रकाशवर्ष की दूरी पर है. जबकि 600 करोड़ साल पहले ये घेरा 26 हजार प्रकाश वर्ष की दूरी पर था. आज भी 6500 प्रकाशवर्ष से लेकर 26 हजार प्रकाशवर्ष के बीच की दूरी आकाशगंगा में रहने के हिसाब से सबसे सुरक्षित है.
आकाशगंगा के केंद्र में सुपरनोवा और अन्य अंतरिक्षीय गतिविधियां होती रहती हैं. लेकिन बाहरी छोर पर ये कम हैं. अगर भविष्य की बात करें तो हमारी आकाशगंगा अब जीवन को पनपने का माहौल बना रही है. अब ऐसी घटनाएं नहीं हो रही हैं, जिससे पूरे के पूरे ग्रह खत्म हो जाएं. या उनपर बसा जीवन नष्ट हो जाए.
Washington NASA’s Curiosity Rover has started working on a rock on Mars since early March. It is named Mont Mercou.The 6-meter-high rock is taken by Rover in a selfie. In the selfie, the rover is seen in front of the rock and the new drill hole is also seen on Nontron, a sample rock. This is the 30th sample of the rover.
This selfie is made up of 60 photographs taken by Mars Hand Lens Imager (MAHLI). It is mounted on the rover’s robotic arm. These photos were mixed with 11 photos taken from Mastcam.Earlier, Rover’s Mastcam also took some panorama photos.
Curiosity transformed the sample into powder after taking it and kept it safe.With their help, the team will study the structure of the rock and try to find out how the history of Mars was. Mont Mercou is a place in France near the village named Nontron. On Mars, scientists found the clay mineral Nontronite which is found in Nontron. That is why this place was named after Nontron.
A few days ago Curiosity sent a video of Mars clouds. These views were captured in the cameras mounted on him.Eight new photos showed five-minute views from the navigation camera’s eye. They were seen moving like the clouds of the earth. These were shared by Scientist Paul Brynern of North Carolina State University.
This new bacterium found from the space station, along with the growth of the plant, provides plants with the ability to fight disease.According to the researchers, this bacterium can also prove to be helpful in growing crops in space. Although not much research has been done about this yet Although not much research has been done about this yet, if this thing proves to be true, then research will also be done on growing crops in Mars with the help of this bacteria.
New Delhi: Two researchers from NASA’s Jet Propulsion Laboratory (JPL) have made a major announcement.He said that a new species of bacteria has been discovered in the samples collected from the International Space Station (ISS).It is being speculated that this species of new bacteria can help us a lot in the mission of space.However, now only further research will be able to tell how much these bacteria will be able to help humans.
Naming will be done in the name of an Indian scientist Researchers Kasturi Venkateswaran and Nitin Kumar Singh (Researchers Kasturi Venkateswaran and Nitin Kumar Singh) from the University of Hyderabad researchers working with NASA reported that they had a total of 4 bacteria in the samples.These bacteria belong to the family Methylobacteriaceae. One of these four bacteria is Batteria, named Methylorubrum rhodesianum,Has already been discovered. The remaining three bacteria are completely new. According to both the researchers, the name of this new bacterium is being named as methylorubrum ajmalii after Dr. Ajmal Khan, the biodiversity scientist of India.
What will help with this search?
This new bacterium found from the space station, along with the growth of the plant, provides plants with the ability to fight disease. According to the researchers, this bacterium has also proved to be helpful in growing crops in space.Although not much research has been done about this yet, if this thing proves to be true, then research will also be done on growing crops in Mars with the help of this bacteria.
What is International Space Station The International Space Station is a very large spacecraft. It constantly revolves around the earth. This is a station where astronautslive.This station has all the necessary facilities for humans to live. Along with this, it is also a science laboratory.
Many countries prepared together The International Space Station has been prepared by a number of space agencies.Russian NASA’s Russian Federal Space Agency (RKA), Japan Aerospace Exploration Agency (JAXA), Canada’s Canadian Space Agency (CSA) and European countries’ joint European Space A with NASA of America to build it Apart from these, the Brazilian Space Agency (AEB) is also working with NASA.
The use of mobiles while sleeping at night can be very dangerous for humans.
New Delhi: In today’s time mobile has become an important part of our life. This is the reason why people keep using the mobile at bedtime, awake and throughout the day. But do you know that the excessive use of mobiles is affecting our lives. Mobile usage can be very dangerous for a human being, especially while sleeping at night.
lack of sleep People who use mobile before bed at night. He sleeps less than normal. According to a study, if a person reads a book before sleeping at night.And while the other person uses the mobile, the study found that the person using the mobile had less sleep. Similarly, the person using the mobile daily with this routine has less sleep.
Lack of concentration Naturally, due to lack of sleep, the human mind will get less rest. Due to which his concentration capacity decreases.Lack of focus affects the performance of the human mind. Along with this, the memory of a person also decreases.
Eyesight is affected The blue rays emanating from the mobile damage our eyes. Especially in the dark at night, watching mobiles makes these blue rays even more dangerous for our eyes. This can cause damage to the retina of our eye.
Justin Maki, NASA Perservere imaging scientist and instrument operations team chief, reveals a full panorama the rover captured from the surface of Mars
The video clip showed the deployment of the parachute and the rover’s touchdown on the surface of the Red Planet
The U.S. space agency NASA on Monday released the first audio from Mars, a faint crackling recording of a gust of wind captured by the Perseverance rover
NASA also released the first video of last week’s landing of the rover, which is on a mission to search for signs of past life on the Red Planet.
A microphone did not work during the rover’s descent to the surface, but it was able to capture audio once it landed on Mars.
NASA engineers played a 60-second recording
What you hear there 10 seconds in is an actual wind gust on the surface of Mars picked up by the microphone and sent back to us here on Earth,” said Dave Gruel, lead engineer for the camera and microphone system on Perseverance.
The high-definition video clip, lasting three minutes and 25 seconds, shows the deployment of a red-and-white parachute with a 70.5-foot-wide (21.5-meter-wide) canopy.
It shows the heat shield dropping away after protecting Perseverance during its entry into the Martian atmosphere and the rover’s touchdown in a cloud of dust in the Jezero Crater just north of the Red Planet’s equator.
“This is the first time we’ve ever been able to capture an event like the landing on Mars,” said Michael Watkins, director of NASA’s Jet Propulsion Laboratory, which is managing the mission.
“These are really amazing videos,” Mr. Watkins said. “We binge-watched them all weekend.”
Thomas Zurbuchen, NASA’s associate administrator for science, said the video of Perseverance’s descent is “the closest you can get to landing on Mars without putting on a pressure suit.”
Perseverance is healthy’ Jessica Samuels, Perseverance’s surface mission manager, said the rover was operating as expected so far and engineers were conducting an intensive check of its systems and instruments.
“I am happy to report that Perseverance is healthy and is continuing with activities as we have been planning them,” Ms. Samuels said.
She said the team was preparing for a flight by the rover’s small helicopter drone dubbed Ingenuity.
“The team is still evaluating,” she said. “We have not locked in a site yet.”
Ingenuity will attempt the first powered flight on another planet and will have to achieve lift in an atmosphere that is just one percent the density of Earth’s.
Perseverance was launched on July 30, 2020 and landed on the surface of Mars on Thursday.
Its prime mission will last just over two years but it is likely to remain operational well beyond that. Its predecessor Curiosity is still functioning eight years after landing on Mars.
Over the coming years, Perseverance will attempt to collect 30 rock and soil samples in sealed tubes to be sent back to Earth sometime in the 2030s for lab analysis.
About the size of an SUV, the craft weighs a ton, is equipped with a seven-foot-long robotic arm, has 19 cameras, two microphones and a suite of cutting-edge instruments.
Mars was warmer and wetter in its distant past, and while previous exploration has determined the planet was habitable, Perseverance is tasked with determining whether it was actually inhabited.
It will begin drilling its first samples in summer, and along the way it will deploy new instruments to scan for organic matter, map chemical composition and zap rocks with a laser to study the vapor.
One experiment involves an instrument that can convert oxygen from Mars’ primarily carbon dioxide atmosphere, much like a plant.
The idea is that humans eventually won’t need to carry their own oxygen on hypothetical future trips, which is crucial for rocket fuel as well as for breathing.
The rover is only the fifth to set its wheels down on Mars. The feat was first accomplished in 1997, and all of them have been American.
The United States is preparing for an eventual human mission to the planet, though planning remains very preliminary.
The first image sent by NASA’s Perseverance rover upon touching down on Mars shows its shadow upon the Red Planet’s surface, at the Jezero crater.
The rover will begin its search for traces of ancient microbial life on Mars
NASA’s science rover Perseverance, the most advanced astrobiology laboratory ever sent to another world, streaked through the Martian atmosphere on Thursday and landed safely on the floor of a vast crater, its first stop on a search for traces of ancient microbial life on the Red Planet.
Mission managers at NASA’s Jet Propulsion Laboratory near Los Angeles burst into applause and cheers as radio signals confirmed that the six-wheeled rover had survived its perilous descent and arrived within its target zone inside Jezero Crater, site of a long-vanished Martian lake bed.
The robotic vehicle sailed through space for nearly seven months, covering 293 million miles (472 million km) before piercing the Martian atmosphere at 12,000 miles per hour (19,000 km per hour) to begin its approach to touchdown on the planet’s surface.
The spacecraft’s self-guided descent and landing during a complex series of maneuvers that NASA dubbed “the seven minutes of terror” stands as the most elaborate and challenging feat in the annals of robotic spaceflight.
“It really is the beginning of a new era,” NASA’s associate administrator for science, Thomas Zurbuchen, said earlier in the day during NASA’s webcast of the event.
The landing represented the riskiest part of two-year, $2.7 billion endeavor whose primary aim is to search for possible fossilized signs of microbes that may have flourished on Mars some 3 billion years ago, when the fourth planet from the sun was warmer, wetter and potentially hospitable to life.
Scientists hope to find biosignatures embedded in samples of ancient sediments that Perseverance is designed to extract from Martian rock for future analysis back on Earth – the first such specimens ever collected by humankind from another planet.
Two subsequent Mars missions are planned to retrieve the samples and return them to NASA in the next decade.
Thursday’s landing came as a triumph for a pandemic-weary United States in the grips of economic dislocation caused by the COVID-19 public health crisis.
Search for ancient life NASA scientists have described Perseverance as the most ambitious of nearly 20 U.S. missions to Mars dating back to the Mariner spacecraft’s 1965 fly-by.
Larger and packed with more instruments than the four Mars rovers preceding it, Perseverance is set to build on previous findings that liquid water once flowed on the Martian surface and that carbon and other minerals altered by water and considered precurors to the evolution of life were present.
Perseverance’s payload also includes demonstration projects that could help pave the way for eventual human exploration of Mars, including a device to convert the carbon dioxide in the Martian atmosphere into pure oxygen.
The box-shaped tool, the first built to extract a natural resource of direct use to humans from an extraterrestrial environment, could prove invaluable for future human life support on Mars and for producing rocket propellant to fly astronauts home.
Another experimental prototype carried by Perseverance is a miniature helicopter designed to test the first powered, controlled flight of an aircraft on another planet. If successful, the 4-pound (1.8-kg) helicopter could lead to low-altitude aerial surveillance of distant worlds, officials said.
The daredevil nature of the rover’s descent to the Martian surface, at a site that NASA described as both tantalizing to scientists and especially hazardous for landing, was a momentous achievement in itself.
The multi-stage spacecraft carrying the rover soared into the top of Martian atmosphere at nearly 16 times the speed of sound on Earth, angled to produce aerodynamic lift while jet thrusters adjusted its trajectory.
A jarring, supersonic parachute inflation further slowed the descent, giving way to deployment of a rocket-powered “sky crane” vehicle that flew to a safe landing spot, lowered the rover on tethers, then flew off to crash a safe distance away.
Perseverance’s immediate predecessor, the rover Curiosity, landed in 2012 and remains in operation, as does the stationary lander InSight, which arrived in 2018 to study the deep interior of Mars.
Last week, separate probes launched by the United Arab Emirates and China reached Martian orbit. NASA has three Mars satellites still in orbit, along with two from the European Space Agency.
Technical mechzone 