Nasa's Parker Solar Probe launched to take closer look at Sun


NEW DELHI: Nasa's Parker Solar Probe was launched today after it was delayed on Saturday due to a technical snag. The probe, a $1.5 billion unmanned spacecraft aims to get closer than any human-made object in history to the centre of our solar system.


The probe is designed to plunge into the Sun's mysterious atmosphere, known as the corona, coming within 3.83 million miles (6.16 million kilometres) of its surface during a seven-year mission.



Saturday's scrub was caused by a helium gas sensor that surpassed a launch limit on the Delta IV-Heavy rocket, United Launch Alliance (ULA) said. The weather forecast was expected to be about 60 percent favourable for launch, according to ULA.


The corona gives rise to the solar wind, a continuous flow of charged particles that permeates the solar system. Unpredictable solar winds cause disturbances in our planet's magnetic field and can play havoc with communications technology on Earth. Nasa hopes the findings will enable scientists to forecast changes in Earth's space environment.


The project, with a $1.5 billion price tag, is the first major mission under Nasa's Living With a Star program.



The probe is set to use seven Venus flybys over nearly seven years to steadily reduce its orbit around the Sun, using instruments designed to image the solar wind and study electric and magnetic fields, coronal plasma and energetic particles. Nasa aims to collect data about the inner workings of the highly magnetized corona.


It is protected by an ultra-powerful heat shield that can endure unprecedented levels of heat, and radiation 500 times that experienced on Earth.


The car-sized probe is designed to give scientists a better understanding of solar wind and geomagnetic storms that risk wreaking chaos on Earth by knocking out the power grid.


The tools on board will measure the expanding corona and continually flowing atmosphere known as the solar wind, which solar physicist Eugene Parker first described in 1958. Parker, now 91, recalled that at first some people did not believe in his theory.


The previous closest pass to the Sun was by a probe called Helios 2, which in 1976 came within 27 million miles (43 million km). By way of comparison, the average distance from the Sun for Earth is 93 million miles (150 million km).


"It's of fundamental importance for us to be able to predict this space weather, much like we predict weather here on Earth," said Alex Young, a solar scientist at NASA's Goddard Space Flight Centre in Maryland. "In the most extreme cases of these space weather events, it can actually affect our power grids here on Earth."

“对我们来说,能够预测这种太空天气非常重要,就像我们预测地球上的天气一样。发生最极端的太空天气事件时,实际上会影响地球上的电网。”马里兰州美国宇航局戈达德太空飞行中心的太阳科学家亚历克斯·扬(Alex Young)说到。

The probe, named after American solar astrophysicist Eugene Newman Parker, will have to survive difficult heat and radiation conditions. It has been outfitted with a heat shield designed to keep its instruments at a tolerable 85 degrees Fahrenheit (29 degrees Celsius) even as the spacecraft faces temperatures reaching nearly 2,500 degrees Fahrenheit (1,370 degrees Celsius) at its closest pass.




来源:三泰虎 http://www.santaihu.com/45814.html  译者:Jessica.Wu


Ajay-21 hours ago

Pappu will now launch his party's made solar probe which is far better then NASA's at midnight today



Sudhir Kale2555  Sudhir Kale-Centreville VA-18 hours ago

Heartiest congratulations, NASA! Well done!!

向NASA表示由衷的祝贺!做得好! !


ONE LINER Challenge14387 ONE LINER Challenge-23 hours ago




Keshab Paul133 Keshab-17 hours ago -Follow

Excellent Job done by NASA.Congratullations to all Nasa Engineer.



Ajay Varma11444 Ajay-18 hours ago -Follow

WTF why did they leave Pappu behind not at all a good decision by Nasa this unique sample would have been a good specimen for them to study and experiment in space



SANDEEP GUPTA590 Sandeep-20 hours ago -Follow

NASA, please take ISRO's help



Subba Iyer Mani10378  Subba Iyer Mani-Chennai-17 hours ago -Follow

After hearing this news, the Gau rakshaks are clamouring to go on the satellite as they believe there are plenty of cows on sun. It is said that the Sun God’s chariot is being pulled by seven white horses. If horses can survive in the sun why not cows? The cows need looking after.



Aditya Loha450  Aditya-17 hours ago -Follow

best of luck to NASA



Bhagavathy Pillai1019 Bhagavathy-Shangli-22 hours ago -Follow

They plan to install American Flag in the burning Sun like they planted American Flag in Moon near Nevada Desert. Sun Landing is at Arizona Desert to withstand the heat. Lol. Trump is going to Witness the Sun Landing & Planting of American Flag.



David Hume4749  David Hume-21 hours ago -Follow

Nobody is going to fall for the lies and deception of NASA after their FAKE moon landing.



Francis Bourne9427  Francis-Dubai-21 hours ago -Follow

We proud Isro..



Eland Kumar1809  Eland Kumar-11 hours ago -Follow

Too late NASA!!! Hanuman went to the sun and held it already..

NASA这也太迟了了! ! !哈努曼(印度神话中的猴神)已经登上太阳并占领它了。


Akib Lakhani871 Akib Lakhani-16 hours ago -Follow

Waste of money , 1.5 billon dollar could be used to feed all poor peoples on earth . This research is of no importance to the people leaving on earth. Zero importance



Vikas Joshi496  Vikas-jaipur-18 hours ago -Follow

it will take 7 years to reach sun orbit .. .a great & long journey ... best wishes to NASA ..



Swapan Ghorai705 Swapan-21 hours ago -Follow

Good job, NASA.Human beings is always busy to explore new arena of knowledge from the be very begng of ancient stone age. That trained will be continued for ever so long as this best creature persists on this planet.



Shankar Ramamurthy2468  Shankar-New Jersey, USA-14 hours ago -Follow

Great feat by NASA. Congratulations to NASA team. This team includes good Indian brains too! The astonishing part the previous day the launch was abrubtlt stopped due to a snag, which has has been rectified, a sense of focus and responsibility.


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