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Jupiter not as Dry as it was Predicted to be: NASA Scientists

Jupiter not as dry as earlier thought, reveals new NASA probe

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Jupiter
Jupiter may not be as dry as earlier shown by a NASA probe, according to the first science. (Representational Image). Pixabay

The largest planet in our solar system may not be as dry as earlier shown by a NASA probe, according to the first science results revealed by the US space agency’s Juno mission on the amount of water in Jupiter’s atmosphere.

At the equator, water makes up about 0.25 per cent of the molecules in Jupiter’s atmosphere — almost three times that of the Sun, said the study published in the journal Nature Astronomy.

These are also the first findings on the gas giant’s abundance of water since NASA’s 1995 Galileo mission suggested Jupiter might be extremely dry compared to the Sun. The comparison is based not on liquid water but on the presence of its components, oxygen and hydrogen, present in the Sun.

“We found the water in the equator to be greater than what the Galileo probe measured,” said Cheng Li, a Juno scientist at the University of California, Berkeley. “Because the equatorial region is very unique at Jupiter, we need to compare these results with how much water is in other regions,” Li said.

An accurate estimate of the total amount of water in Jupiter’s atmosphere has been on the wish lists of planetary scientists for decades. The figure in the gas giant represents a critical missing piece to the puzzle of our solar system’s formation.

Jupiter
These are also the first findings on the gas giant’s abundance of water since NASA’s 1995 Galileo mission suggested Jupiter might be extremely dry compared to the Sun. (Representational Image). Pixabay

Jupiter was likely the first planet to form, and it contains most of the gas and dust that was not incorporated into the Sun.

Water abundance also has important implications for the gas giant’s meteorology (how wind currents flow on Jupiter) and internal structure. While lightning — a phenomenon typically fuelled by moisture — detected on Jupiter by Voyager and other spacecraft implied the presence of water, an accurate estimate of the amount of water deep within Jupiter’s atmosphere remained elusive.

Before the Galileo probe stopped transmitting 57 minutes into its Jovian descent in December 1995, it radioed out spectrometer measurements of the amount of water in the gas giant’s atmosphere down to a depth of about 120 kilometres. The scientists working on the data were dismayed to find ten times less water than expected.

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A rotating, solar-powered spacecraft Juno was launched in 2011. Because of the Galileo probe experience, the mission seeks to obtain water abundance readings across large regions of the immense planet.

The Juno science team used data collected during Juno’s first eight science flybys of Jupiter to generate the findings. (IANS)

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NASA Receives Over 12K Applications By Candidates For Joining its Next Class of Artemis Generation Astronauts

The next class of Artemis Generation astronauts will help us explore more of the Moon than ever before and lead us to the Red Plane

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NASA
NASA expects to introduce the new astronaut candidates in the summer of 2021. Pixabay

NASA has received over 12,000 applications from people showing willingness to join its next class of Artemis Generation astronauts who will help the US space agency explore the Moon and Mars like never before.

The application for the newest class of astronauts opened March 2 and closed March 31, NASA said on Wednesday, adding that applications were received from every US state, the District of Columbia, and four US territories. “We’ve entered a bold new era of space exploration with the Artemis programme, and we are thrilled to see so many incredible Americans apply to join us,” NASA Administrator Jim Bridenstine said in a statement.

“The next class of Artemis Generation astronauts will help us explore more of the Moon than ever before and lead us to the Red Planet,” Bridenstine added. However, the process is just beginning for NASA’s Astronaut Selection Board, which will assess the applicants’ qualifications and invite the most qualified candidates to the agency’s Johnson Space Center in Houston for interviews and medical tests before making a final selection.

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NASA expects to introduce the new astronaut candidates in the summer of 2021. Once selected, the astronaut candidates will go through approximately two years of initial skills training, such as spacewalking, robotics, and spacecraft systems, as well as expeditionary behavior skills, such as leadership, followership, and teamwork.

After completing training, the new astronauts could launch on American rockets and spacecraft — developed for NASA’s Commercial Crew Program — to live and work aboard the International Space Station, 250 miles above Earth. There they will take part in experiments that benefit life at home and prepare NASA for the Moon and Mars.

This new class also may launch aboard NASA’s powerful new Space Launch System rocket and Orion spacecraft for Artemis missions to the Moon. Beginning in 2024, NASA will send the first woman and next man to the lunar surface and will establish sustainable lunar exploration by 2028. Gaining insights from new experiences on and around the Moon will prepare NASA to send the first humans to Mars in the 2030s.

Astronaut, Space Shuttle, Discovery, Space, Universe
NASA has received over 12,000 applications from people showing willingness to join its next class of Artemis Generation astronauts who will help the US space agency explore the Moon and Mars like never before. Pixabay

The number of people who applied to be an astronaut represents the second-highest number of applications NASA has ever received, surpassed only by the record of 18,300 set by the most recent class of astronauts who graduated in January. For this round of applications, NASA increased the education requirement for applicants from a bachelor’s degree to a master’s degree in a science, technology, math, or engineering field.

In addition, the application period was shortened from two months to one. Since the 1960s, NASA has selected 350 people to train as astronaut candidates for its increasingly challenging missions to explore space.

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With 48 astronauts in the active astronaut corps, more will be needed to serve as crew aboard spacecraft bound for multiple destinations and propel exploration forward as part of Artemis missions and beyond. (IANS)