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NASA has said that it successfully demonstrated a new nuclear reactor power system that could enable crewed missions to the Moon, Mars and destinations beyond.
NASA announced the results of the demonstration, called the Kilopower Reactor Using Stirling Technology (KRUSTY) experiment on Wednesday at its Glenn Research Center in Cleveland.
The Kilopower experiment was conducted at the US Department of Energy’s National Nuclear Security Administration’s Nevada National Security Site from November 2017 through March.
Such a demonstration could pave the way for future Kilopower systems that power human outposts on the Moon and Mars, NASA said in a statement.
“Safe, efficient and plentiful energy will be the key to future robotic and human exploration,” said Jim Reuter of NASA’s Space Technology Mission Directorate in Washington.
“I expect the Kilopower project to be an essential part of lunar and Mars power architectures as they evolve,” Reuter said.
Kilopower is a small, lightweight fission power system capable of providing up to 10 kilowatts of electrical power – enough to run several average households – continuously for at least 10 years.
Four Kilopower units would provide enough power to establish an outpost.
The pioneering power system is ideal for the Moon, where power generation from sunlight is difficult because lunar nights are equivalent to 14 days on Earth, said Marc Gibson, lead Kilopower engineer at Glenn.
“Kilopower gives us the ability to do much higher power missions, and to explore the shadowed craters of the Moon,” said Gibson.
“When we start sending astronauts for long stays on the Moon and to other planets, that’s going to require a new class of power that we’ve never needed before.”
The prototype power system uses a solid, cast uranium-235 reactor core, about the size of a paper towel roll.
Passive sodium heat pipes transfer reactor heat to high-efficiency Stirling engines, which convert the heat to electricity.
The purpose of the recent experiment in Nevada was two-fold: to demonstrate that the system can create electricity with fission power, and to show the system is stable and safe no matter what environment it encounters, said David Poston of National Nuclear Security Administration’s Los Alamos National Laboratory.
“We threw everything we could at this reactor, in terms of nominal and off-normal operating scenarios and KRUSTY passed with flying colours,” said Poston. (IANS)
By Maria Wirth
This is a true story about a Hindu who had converted to Christianity, and who felt the need to convince his family also to convert.
Once on a flight from Germany to India, one of those bright, young Indians sat across the aisle. We started talking. He was a science lecturer at an American university.
When food came, he ordered non-veg and I ordered veg. I teasingly asked him “non-veg”? He replied, “Yes, I started to eat meat when I converted to Christianity eight years ago.”
“You… converted… to… Christianity?” I asked in disbelief. “How could you do this? Are you not aware of their belief?” I kept throwing questions at him. He surely had not expected this reaction from a white woman with the name Maria. In all likelihood he had converted because he wanted to belong and fit in into the new surrounding in America.
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But since I grew up as a Christian, I knew what Christianity claims and he didn’t have answers. Ultimately he fell back at the ‘personal experience with Jesus’ which convinced him that Christianity is the true religion.
I told him, “If your trust in Jesus helps you, great, but why convert?” Doesn’t your own tradition stress the importance of devotion and does it hinder you from trusting Jesus?” And while for you Jesus may be the ideal guide, for others it may be Shiva or Krishna or Devi. Your tradition allows you all freedom whereas the Church binds you to the doctrine. For example it claims that Hindus go to hell. Do you believe that your Hindu brothers and sisters go to hell?” I asked.
I couldn’t believe his answer and by now he did not look anymore so bright. He said, “Yes, we have to believe this.” … we have to…
So I asked him about his family. Will they burn in hell? He had managed to convince his parents to convert, but his siblings had not (yet?) converted.
I really felt pity for him. His mental freedom to question and to enquire was gone.
He had earlier told me that he wanted to return to India. If he did, I hope he has found his way back to common sense and realised the folly to believe that Hindus go to hell.
By- Laxman Balagani
Remote working has grown to be a dominant trend in the post-pandemic world. Gartner anticipates that 41% of employees will work at least some of the time remotely once the coronavirus is in the rear-view mirror. Such a lasting change in the workplace culture has had the biggest impact on cybersecurity.
Many businesses struggle with how to secure remote workers or if it's even worth trying at all due to fears about security risks for those who aren't physically present on-site at any given time. What they need is insightful, practical, and useful visibility across all communication vectors as they support vast, remote workforces. To obtain this level of visibility, organizations should reconsider their data and user protection techniques and strive to get meaningful insights into what's going on behind the scenes.
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There are cyber risk management solutions available today that can help ensure your business stays safe and productive without sacrificing flexibility for your employees.
To guarantee a safe and secure working environment, enterprises must rethink their approach to security and privacy when dealing with a dispersed workforce. This article explores how business leaders should approach cybersecurity risk management in the era of remote working.
A behavior-centric approach based on a human-centric viewpoint on cybersecurity
The growing usage of smartphones, cloud-based apps, and social media in both work and personal has made it clear that people are the new perimeter. To contain these changes, the new cybersecurity risk management strategy, which aims to protect people, places, and things, works on a behavior-centric approach.
This approach centers on understanding users' behaviors using critical data and intellectual property across worldwide IT systems. This strategy is designed to identify problematic employee behaviors and prevent them from escalating. It's a new way of defending against threats that complements the traditional cyber risk management approach of stopping the bad guys.
It has become essential for businesses to integrate edge security, cloud security, and network security into a single, cohesive format. Here are a few steps businesses can take to enhance cybersecurity when working remotely -
To guarantee a safe and secure working environment, enterprises must rethink their approach to security and privacy when dealing with a dispersed workforce.Unsplash
Providing cyber security training to employees who work remotely can help minimize cyber threats. Ideally, employees should be able to spot a cyber scam in action and know how to avoid it in the future so they stay one step ahead of cyber threats. Providing cyber security training through video modules or cyber security e-learning is a great way to help remote employees retain cyber threat prevention techniques, cyber-hygiene standards, and cyber safety procedures.
There is an absence of a true security perimeter in a remote workplace. Thus, organizations must adopt the mentality of zero trust. All systems must be properly secured and require verified access, whether internal or external. Adding a layer of multi-factor authentication is a crucial step that will protect data from unauthorized access.
Ironically, cloud-based security systems offer better cybersecurity risk management than on-premise servers. Cloud systems are built from the ground up to be safe even when exposed to the public internet. This gives them an edge over regular file servers, which are only lightly secured with sensitive data.
The use of collaboration tools and videoconferencing platforms to allow for business interactions while away has increased significantly. Most of these were quickly integrated, with resiliency taking precedence over any security concerns. The recent Zoom-bombing is the poster child for the risks that come with adopting technologies fast. Teams in the CXO suite need to get defensive and audit all tools and platforms for security flaws before integrating them.
We've already seen software-defined networks (SDNs) emerge to define and protect networks, allowing businesses to use a single, holistic approach for all edge computing. Now that remote networks have taken center stage, IT leaders must apply the same strategy across the network and into the cloud to ensure consistency, cohesion, and security.
Remote working makes it imperative to rely on digital connections, making it critical to ensure that they're secure, fast, scalable, and robust across all networks.
Some companies may not embrace working remotely as their modus operandi, while some organizations might cling to an outdated network model. Anyhow, businesses must consider the long-term impacts of technological disruption and look at them as opportunities. With a distributed workforce, organizations must reconsider how they secure and protect their data.
(Disclaimer: This article is sponsored and includes some commercial links.)
By- Devakinanda Ji!
ॐ त्रिकालसन्ध्यानुष्ठितभूम्यै नमः
(Ṫrikāla: Three periods of the day; Sandhya: Obeisance to Sun god; Anuṣthiṫa: Practice, performance)
The word sandhya refers to those times, when night passes into day and day passes into night. They are dawn and dusk. The ritual of one's obeisance to God during these periods is known as sandhyāvandanam. Doing the ritual thrice at dawn (prātah sandhyā), at midday when the sun is right above our head (madhyāhna sandhyā); and dusk (sāyantrah sandhyā) is known as trikāla.
A person who has undergone the upanayana ceremony, as also house-holders (except the working class), are expected to perform this sandhyā ritual three times a day, as a sacred duty. These three rituals have many steps in common. However, in practice, only the first and the last have survived. The scriptures have provided for this modification.
After taking a bath and wearing the traditional religious dress (dhoṫi and chadar or uttarīya) one should apply the religious marks on the forehead (like the vibhūti or the ūrdhva puṇḍra as per one's family traditions), and sit on the seat (kept aside and used only for such religious purposes). Though there are differences in the procedure and the various steps to be followed, the six steps common to all and the detailed procedure has to be learnt from the family priest or the elders in the family.
These six steps are: 1) Āchamanam- is the ceremonial sipping of water from the right hand cupped in the shape of the ear of a cow (gokarṇam) to the appropriate mantras. This āchamanam is a general purification act that precedes every religious undertaking. 2) Prāṇāyāmam- is the control of the prāṇic energy through the regulation of the breathing process as detailed in the works of yoga. Prāṇayāmam helps in the control of the mind also. 3) Mārjanam- is literally means cleansing or purifying. It consists of sprinkling water on specified parts of the body with a mantra. This process will make the body ceremonially pure and fit the ritualistic act. 4) Arghyapradāna-is the offering of water taken in the two hands cupped together, by repeating the Gāyatrī mantra and addressing the Sun-god. This is just to show our gratitude to the Sun-god who is our primary life-support. 5) Gāyatrī japa-is for the goddess Gāyatrī within the orb of the sun. 6) Sūryopasṭhāna- is repeating the prayer addressed to the deity Gāyatrī in the standing posture, facing the sun. This is the last rite of bidding farewell to the goddess after having invoked her and satiated her through japa.
Hence, our land which worships the Sun-god who is our primary life-support, three times a day is known to be 'Trikālasandhyāvandānuṣthiṫa Bhūmi'.