science
Sirisha Bandla, Indian-Born Astronaut, to Fly With Richard Branson in Virgin Galactic Spaceflight on July 11
Published
1 year agoon
By
Cangir Trade
Sirisha Bandla, an Indian-origin astronaut, will be taking care of the researcher experience on the Unity22 mission, when a Virgin Galactic test flight travels to the edge of space on July 11.
Andhra Pradesh-born Bandla will be one of the six space travellers aboard ”VSS Unity” of Virgin Galactic, scheduled to take off to space on July 11 from New Mexico alongside the founder of Virgin Galactic Richard Branson.
The Telugu woman hailing from Andhra’s Guntur district who was brought up in Houston will become the second India-born woman to fly into space after Kalpana Chawla. Rakesh Sharma, and Sunita Williams were the other Indians who went into space prior to Bandla.
Taking to Twitter, the 34-year-old aeronautical engineer shared she was “incredibly honoured” to be part of the crew.
“I am so incredibly honoured to be a part of the amazing crew of Unity22, and to be a part of a company whose mission is to make space available to all,” she posted.
Former Andhra Pradesh Chief Minister N Chandrababu Naidu also shared two pictures – one featuring all five members of the crew and a solo photo of Sirisha Bandla on his official Twitter handle.
Indian-origin women continue to break the proverbial glass ceiling and prove their mettle. On July 11th, @SirishaBandla with Telugu roots is set to fly to space aboard VSS Unity with @RichardBranson and the team marking the dawn of the new space age, making all Indians proud! pic.twitter.com/oecuztDRBe
— N Chandrababu Naidu (@ncbn) July 2, 2021
“Indian-origin women continue to break the proverbial glass ceiling and prove their mettle. On July 11th, Sirisha Bandla with Telugu roots is set to fly to space aboard VSS Unity with Richard Branson and the team marking the dawn of the new space age, making all Indians proud!,” the Chief Minister tweeted.
UK billionaire and founder of the Virgin Galactic company Richard Branson announced on June 2 that he will make a spaceflight on July 11, earlier than Amazon founder Jeff Bezos.
“I’ve always been a dreamer. My mum taught me to never give up and to reach for the stars. On July 11, it’s time to turn that dream into a reality aboard the next @VirginGalactic spaceflight,” Branson tweeted on late Thursday.
The company confirmed the information and published a video, presenting six crew members of the next spaceflight, including Bandla.
“Join us July 11th for our first fully crewed rocket powered test flight, and the beginning of a new space age. The countdown begins,” the company wrote on its Twitter page.
Bezos is also going to make a spaceflight on board the New Shepard spaceship, which is scheduled for July 20.
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science
Elon Musk’s SpaceX Launched Falcon 9 With 46 Starlink Satellites to Low-Earth Orbit
Published
1 hour agoon
13 August، 2022By
Cangir Trade
Billionaire tycoon Elon Musk-led SpaceX launched another batch of Starlink satellites into orbit on Friday.Taking to his official Twitter account, Musk, the founder of American spacecraft manufacturer, and satellite communications corporation SpaceX shared the details about the new satellite launch.
According to the SpaceX reports, Falcon 9 launched 46 Starlink satellites to low-Earth orbit from Space Launch Complex 4 East (SLC-4E) at Vandenberg Space Force Base, California.
Nine minutes after the launch, the rocket first landed over a drone ship in the Pacific Ocean and it was liftoff in a short time. The second stage was expected to deploy the satellites 63 minutes after launch after the livestream concluded.
The new satellites are part of Group 3, which orbits in a shell that might be prone to debris “squalls” from a Russian anti-satellite test that took place in November last year, according to SpaceNews report.
A space-tracking company COMSPOC recently revealed a conjunction squall event, in which the 841 Starlink satellites representing about 30 percent of the SpaceX constellation are affected by 6,000 close approaches.
A conjunction, by COMSPOC standards, is defined as two orbiting objects being within 6 miles (10 kilometres) of each other. SpaceX hasn’t commented on whether any Starlinks were affected, but in past discussions about space junk, the company has emphasized that its satellites can manoeuvre to dodge close-approaching spacecraft or debris.
COMSPOC stated in a report that, Group 3 of Starlink’s five layers spacecraft are in a similar orbit to other sun-synchronous satellites that have come close to the Russian ASAT debris before.
Group 3 is at an inclination of 97.6 degrees and at an altitude of 347 miles (560 kilometres), according to Teslarati.
SpaceX has already sent two other Group 3 collections into orbit, on July 10 and July 22, both from Vandenberg.
SpaceX’s 36th launch of 2022 added to its ever-growing record for launches in a year. The company also concluded its 62nd consecutive landing of a first stage, and a 34th reflight of a booster in 2022.
Friday’s flight was the 10th for this particular Falcon 9 first stage, according to reports, it was a SpaceX mission.
science
First Synthetic Embryos: the Scientific Breakthrough Raises Serious Ethical Questions
Published
5 hours agoon
13 August، 2022By
Cangir Trade
Children, even some who are too young for school, know you can’t make a baby without sperm and an egg. But a team of researchers in Israel have called into question the basics of what we teach children about the birds and the bees, and created a mouse embryo using just stem cells. It lived for eight days, about half a mouse’s gestation period, inside a bioreactor in the lab.
In 2021 the research team used the same artificial womb to grow natural mouse embryos (fertilised from sperm and eggs), which lived for 11 days. The lab-created womb, or external uterus, was a breakthrough in itself as embryos could not survive in petri dishes.
If you’re picturing a kind of silicone womb, think again. The external uterus is a rotating device filled with glass bottles of nutrients. This movement simulates how blood and nutrients flow to the placenta. The device also replicates the atmospheric pressure of a mouse uterus.
Some of the cells were treated with chemicals, which switched on genetic programmes to develop into placenta or yolk sac. Others developed into organs and other tissues without intervention. While most of the stem cells failed, about 0.5% were very similar to a natural eight-day-old embryo with a beating heart, basic nervous system and a yolk-sac.
These new technologies raise several ethical and legal concerns.
Artificial wombs
In the latest study, scientists started with collections of stem cells. The conditions created by the external uterus triggered the developmental process that makes a fetus. Although the scientists said we are a long way off synthetic human embryos, the experiment brings us closer to a future where some humans gestate their babies artificially.
Each year over 300,000 women worldwide die in childbirth or as a result of pregnancy complications, many because they lack basic care. Even in wealthy countries, pregnancy and childbirth is risky and healthcare providers are criticised for failing mothers.
There is an urgent need to make healthcare more accessible across the planet, provide better mental health support for mothers and make pregnancy and childbirth safer. In an ideal world every parent should expect excellent care in all aspects of motherhood. This technology could help treat premature babies and give at least some women a different option: a choice of whether to carry their child or use an external uterus.
Some philosophers say there is a moral imperative to develop artificial wombs to help remedy the unfairness of parenting roles. But other researchers say artificial wombs would threaten a women’s legal right to terminate a pregnancy.
Synthetic embryos and organs
In the last few years, scientists have learned more about how to coax stem cells to develop into increasingly sophisticated structures, including ones that mimic the structure and function of human organs (organoids). Artificial human kidneys, brains, hearts and more have all been created in a lab, though they are still too rudimentary for medical use.
The issue of whether there are moral differences between using stem cells to produce models of human organs for research and using stem cells to create a synthetic embryo are already playing out in law courts.
One of the key differences between organoids and synthetic embryos is their potential. If a synthetic embryo can develop into a living creature, it should have more protection than those which don’t.
Synthetic embryos do not currently have potential to actually create a living mouse. If scientists did make human synthetic embryos, but without the potential to form a living being, they should arguably be treated similarly to organoids.
Some countries (for example Australia) have taken the position that synthetic embryos such as “blastoids” (which resemble five-to-six-day-old embryos) should be treated like natural embryos, because of similarities in structure. Other countries (such as the UK, the US, Japan) treat synthetic embryos as different from embryos because they can’t currently produce a live baby.
Another important legal issue is the source of stem cells and consent. The synthetic mouse embryo creators used stem cells from early embryos.
However, in the future it might be possible to make synthetic embryos from induced pluripotent stem cells (IPS). The worst case scenario would be a person donates a skin cell to research into producing organs to cure disease but this is used without their knowledge or consent to produce synthetic embryos.
Cloning
IPS cells are created by taking a mature cell (such as a skin cell) from a living or dead person and applying treatments which drive it backwards to a more immature state. If the cell could be driven all the way back to an embryonic stem cell, it may one day be possible to use IPS cells to make viable embryos.
That embryo would be a clone of the cell donor. The public and scientists have huge concerns about human cloning.
But it has been possible to clone a human being using a different process called nuclear transfer, for 25 years. Nuclear transfer created Dolly the Sheep in 1997 and a monkey in 2018. In the late 90s and early 2000s, a flurry of laws introduced around the world successfully banned human cloning.
We should not let our fears about cloning stand in the way of crucial research. The benefits could make organ donor waiting lists a thing of the past, save premature babies and give women an option to have children a different way. Cloning, or any other unethical use of the technology, can be prevented by regulation.
science
First Synthetic Embryos: the Scientific Breakthrough Raises Serious Ethical Questions
Published
5 hours agoon
13 August، 2022By
Cangir Trade
Children, even some who are too young for school, know you can’t make a baby without sperm and an egg. But a team of researchers in Israel have called into question the basics of what we teach children about the birds and the bees, and created a mouse embryo using just stem cells. It lived for eight days, about half a mouse’s gestation period, inside a bioreactor in the lab.
In 2021 the research team used the same artificial womb to grow natural mouse embryos (fertilised from sperm and eggs), which lived for 11 days. The lab-created womb, or external uterus, was a breakthrough in itself as embryos could not survive in petri dishes.
If you’re picturing a kind of silicone womb, think again. The external uterus is a rotating device filled with glass bottles of nutrients. This movement simulates how blood and nutrients flow to the placenta. The device also replicates the atmospheric pressure of a mouse uterus.
Some of the cells were treated with chemicals, which switched on genetic programmes to develop into placenta or yolk sac. Others developed into organs and other tissues without intervention. While most of the stem cells failed, about 0.5% were very similar to a natural eight-day-old embryo with a beating heart, basic nervous system and a yolk-sac.
These new technologies raise several ethical and legal concerns.
Artificial wombs In the latest study, scientists started with collections of stem cells. The conditions created by the external uterus triggered the developmental process that makes a fetus. Although the scientists said we are a long way off synthetic human embryos, the experiment brings us closer to a future where some humans gestate their babies artificially.
Each year over 300,000 women worldwide die in childbirth or as a result of pregnancy complications, many because they lack basic care. Even in wealthy countries, pregnancy and childbirth is risky and healthcare providers are criticised for failing mothers.
There is an urgent need to make healthcare more accessible across the planet, provide better mental health support for mothers and make pregnancy and childbirth safer. In an ideal world every parent should expect excellent care in all aspects of motherhood. This technology could help treat premature babies and give at least some women a different option: a choice of whether to carry their child or use an external uterus.
Some philosophers say there is a moral imperative to develop artificial wombs to help remedy the unfairness of parenting roles. But other researchers say artificial wombs would threaten a women’s legal right to terminate a pregnancy.
Synthetic embryos and organs In the last few years, scientists have learned more about how to coax stem cells to develop into increasingly sophisticated structures, including ones that mimic the structure and function of human organs (organoids). Artificial human kidneys, brains, hearts and more have all been created in a lab, though they are still too rudimentary for medical use.
The issue of whether there are moral differences between using stem cells to produce models of human organs for research and using stem cells to create a synthetic embryo are already playing out in law courts.
One of the key differences between organoids and synthetic embryos is their potential. If a synthetic embryo can develop into a living creature, it should have more protection than those which don’t.
Synthetic embryos do not currently have potential to actually create a living mouse. If scientists did make human synthetic embryos, but without the potential to form a living being, they should arguably be treated similarly to organoids.
Some countries (for example Australia) have taken the position that synthetic embryos such as “blastoids” (which resemble five-to-six-day-old embryos) should be treated like natural embryos, because of similarities in structure. Other countries (such as the UK, the US, Japan) treat synthetic embryos as different from embryos because they can’t currently produce a live baby.
Another important legal issue is the source of stem cells and consent. The synthetic mouse embryo creators used stem cells from early embryos.
However, in the future it might be possible to make synthetic embryos from induced pluripotent stem cells (IPS). The worst case scenario would be a person donates a skin cell to research into producing organs to cure disease but this is used without their knowledge or consent to produce synthetic embryos.
Cloning IPS cells are created by taking a mature cell (such as a skin cell) from a living or dead person and applying treatments which drive it backwards to a more immature state. If the cell could be driven all the way back to an embryonic stem cell, it may one day be possible to use IPS cells to make viable embryos.
That embryo would be a clone of the cell donor. The public and scientists have huge concerns about human cloning.
But it has been possible to clone a human being using a different process called nuclear transfer, for 25 years. Nuclear transfer created Dolly the Sheep in 1997 and a monkey in 2018. In the late 90s and early 2000s, a flurry of laws introduced around the world successfully banned human cloning.
We should not let our fears about cloning stand in the way of crucial research. The benefits could make organ donor waiting lists a thing of the past, save premature babies and give women an option to have children a different way. Cloning, or any other unethical use of the technology, can be prevented by regulation.
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