NASA to launch car-size spacecraft to study Sun
Washington, July 23 : US space agency NASA is preparing to launch a probe in August to study the Sun closer than any human-made object ever has, revealing multiple mysteries behind the star.
The car-sized spacecraft called Parker Solar Probe is slated to lift off no earlier than August 6 on a United Launch Alliance Delta IV Heavy, according to NASA, Xinhua news agency reported.
The Sun's atmosphere constantly sends magnetized material outward, enveloping our solar system far beyond the orbit of Pluto.
Coils of magnetic energy can burst out with light and particle radiation that travel through space and create temporary disruptions in our atmosphere, sometimes garbling radio and communications signals near Earth.
Therefore, the key to understanding its origins lies in understanding the Sun itself and that's where Parker Solar Probe comes in, according to the researchers at NASA.
The spacecraft carries a lineup of instruments to study the Sun both remotely and directly.
One science task is the mystery of the acceleration of the solar wind, the Sun's constant outflow of material, and the other is the secret of the corona's enormously high temperatures, according to NASA.
Also, Parker Solar Probe's instruments might reveal the mechanisms at work behind the acceleration of solar energetic particles, which can reach speeds more than half as fast as the speed of light as they rocket away from the Sun. Such particles can interfere with satellite electronics, especially for satellites outside of Earth's magnetic field.
The biggest breakthrough for the spacecraft is its cutting-edge heat shield, according to NASA.
"The Thermal Protection System (the heat shield) is one of the spacecraft's mission-enabling technologies," said Andy Driesman, Parker Solar Probe project manager at the Johns Hopkins Applied Physics Lab. "It allows the spacecraft to operate at about room temperature."
The heat shield is a sandwich of carbon-carbon composite surrounding nearly four and half inches of carbon foam, which is about 97 per cent air.
"The launch energy to reach the Sun is 55 times that required to get to Mars, and two times that needed to get to Pluto," said Guo Yanping from the Johns Hopkins Applied Physics Laboratory, who designed the mission trajectory.
The Delta IV Heavy is one of the world's most powerful rockets.
"During summer, Earth and the other planets in our solar system are in the most favourable alignment to allow us to get close to the Sun," said Guo.
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BJP put lives at stake for extorting political donations from vaccine manufacturer: Akhilesh
Lucknow (PTI): Amid a controversy over the "side effects" of Covishield vaccine, Samajwadi Party chief Akhilesh Yadav on Wednesday accused the BJP of putting the lives of people at stake for "extorting political donations" from a vaccine manufacturer.
Demanding a high-level judicial probe into it, Yadav said allowing such lethal medicines amounts to a “conspiracy to murder someone” and those responsible should be prosecuted.
"Around 80 crore Indians have been given the Covishield vaccine, which is two doses per person, and the company that made its original formula has said that it causes a risk of heart attack,” Yadav said in a post on X.
“Those who have lost their loved ones due to the side effects of the vaccine or who feared the ill effects of the vaccine, their doubts and fears have now been proven right," the former Uttar Pradesh chief minister said.
Those who play with the lives of the people will not be forgiven, he said.
UK-headquartered pharma giant AstraZeneca has admitted that in "very rare cases", its COVID-19 vaccine, which is known as Vaxzevria in Europe and Covishield in India, can cause a blood clot-related side effect but the causal link is unknown, according to court papers being quoted in the UK media.
In India, the AstraZeneca vaccine was manufactured by the Serum Institute of India.
Attacking the BJP, the SP chief further said, "The ruling party has put the lives of the public at stake by collecting political donations from the vaccine manufacturing company."
“Neither the law, nor the public will ever forgive them. There should be a judicial inquiry at the highest level in this matter," Yadav added.
SP leaders had made similar allegations on Tuesday, saying the BJP took "commission" from the manufacturer of the Covid vaccine, which they said was "forcibly" administered to people.
Uttar Pradesh Congress chief Ajay Rai had also attacked Prime Minister Narendra Modi over the issue. "Is this Modi's guarantee?" he had asked.
SP national general secretary Shivpal Yadav had said, "It has now been exposed that they have taken commission in vaccines too. Low quality vaccines and medicines were given to the people."
Dimple Yadav, wife of SP chief Akhilesh Yadav, said people were "forcibly" administered Covid vaccines in the country.
"A donation of Rs 200-300 crore was taken (by the BJP) and they (company) were given permission to market the vaccine. People were forcibly administered vaccines. No where in the world vaccines were administered forcibly,” Dimple said, adding that corruption in vaccine manufacturing has now come to the fore.
Akhilesh Yadav, while the country was under the impact of COVID-19 pandemic, had said that he would not take the "BJP's vaccine", and that when his government comes to power, everyone would be vaccinated for free.
The Daily Telegraph reported that in a legal document submitted to the High Court in London in February for a group action brought by 51 claimants, AstraZeneca admitted that the vaccine developed with the University of Oxford to protect against COVID-19 may cause Thrombosis with Thrombocytopenia Syndrome (TTS) in "very rare cases".
