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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Will follow Shinde in any direction he goes: MLA Shirsat on allying with Pawar Sr for CM post
Mumbai, Nov 21: Shiv Sena MLA Sanjay Shirsat on Thursday said his party leaders will follow Maharashtra Chief Minister Eknath Shinde in any direction he goes post-assembly poll results and decisions taken by him will be acceptable to them.
He asserted the party will solidly back Shinde, who heads the Shiv Sena, as it trusts his leadership, comments coming two days ahead of the state assembly poll results.
Asked what if Shinde goes with rival NCP (SP) president Sharad Pawar to become the chief minister for a second time, Shirsat said, "We are committed to (follow) whatever Eknath Shinde decides. We will be solidly with him. We trust him and it will always be there."
The MLA from Chhatrapati Sambhajinagar (West) was responding to the question asked on a TV channel.
Shirsat said Shinde, who took over as CM in June 2022 after revolting against the then leadership of the Shiv Sena, only goes in the "right direction" and this has been the experience of party leaders.
Shirsat was one of the Shiv Sena MLAs who sided with Shinde at the time of the revolt.
Asked about the comments of his ally, BJP leader Pravin Darekar said, "Shirsat's remarks do not reflect the official stance of the party. Eknath Shinde's party contested against Uddhav Thackeray-led Shiv Sena (UBT) and Sharad Pawar's NCP (SP). Such an alliance with the MVA was inconceivable."
The BJP, Shinde-led Shiv Sena and NCP headed by deputy CM Ajit Pawar are members of the ruling Mahayuti alliance. On the other hand, the opposition Maha Vikas Aghadi (MVA) consists of the Congress, Shiv Sena (UBT) and NCP (Sharadchandra Pawar).
Asked what if Shinde is not made the CM again if Mahayuti retains power, Shirsat said, "A decision on this will be taken only by Eknath Shinde. It's his right and we cannot even comment on it. Whatever decision Shinde takes will be acceptable to us."
Voting for the 288-member state assembly concluded on November 20 and results will be declared on November 23.
