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NASA discovers galactic tail twice as long as Milky Way

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Washington: An unbelievable and extraordinary ribbon of hot gas has been discovered by NASA’s Chandra X-ray Observatory.

This ribbon, or X-ray tail, is likely due to gas stripped from the galaxy as it moves through a vast cloud of hot intergalactic gas.

With a length of at least 250,000 light years, it is likely the largest such tail ever detected.

The tail is located in the galaxy cluster Zwicky 8338, which is almost 700 million light years from Earth.

The length of the tail is more than twice the diameter of the entire Milky Way galaxy.

The tail contains gas at temperatures of about 10 million degrees Celsius but still hot enough to glow brightly in X-rays that Chandra can detect, the US space agency said in a statement.

The researchers think the tail was created as a galaxy known as CGCG254-021, or perhaps a group of galaxies dominated by this large galaxy, plowed through the hot gas in Zwicky 8338.

The pressure exerted by this rapid motion caused gas to be stripped away from the galaxy.

Astronomers were also able to learn more about the interactions of the system by carefully examining the properties of the galaxy and its tail.

The tail has a brighter spot, referred to as its “head”. Behind this head is the tail of diffuse X-ray emission.

The gas in the head may be cooler and richer in elements heavier than helium than the rest of the tail.

In front of the head there are hints of a bow shock, similar to a shock wave formed by a supersonic plane and in front of the bow shock is the galaxy CGCG254-021.
The paper describing these results was published in the Astronomy and Astrophysics journal. (IANS) (image: nasa.gov)

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NASA, SpaceX Postpone Historic Astronauts Launch Due to Bad Weather

The launch was delayed due to unfavourable weather in the flight path according to SpaceX

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NASA and SpaceX postponed historic launch of two astronauts to space. Pixabay

NASA and SpaceX postponed historic launch of two astronauts to space from NASA’s Kennedy Space Center in Florida on Wednesday due to bad weather.

“Due to the weather conditions, the launch is scrubbing,” NASA tweeted, Xinhua reported.

SpaceX said the launch was delayed due to unfavourable weather in the flight path.

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The next launch opportunity is scheduled on Saturday, May 30. Pixabay

The next launch opportunity is scheduled on Saturday, May 30.

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A SpaceX Falcon 9 rocket will carry the Crew Dragon spacecraft and veteran NASA astronauts Bob Behnken and Doug Hurley to the International Space Station (ISS).

It will be the first time since 2011 that American astronauts launch on an American rocket from American soil to the ISS. (IANS)

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Moon Mission: NASA Seeking Healthy US Citizens For 8-Month Isolation

NASA is looking for candidates between the ages of 30 and 55

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NASA is looking for healthy individuals for their study on isolation for 8 months. Pixabay

NASA is seeking US citizens for an eight-month study on social isolation in preparation for missions to Mars and the moon.

The international space agency is preparing for its next spaceflight simulation study and is seeking healthy participants to live together with a small crew in isolation for eight months in Moscow, Russia.

Participants will be staying in a lab located in Moscow, and they will experience environmental aspects similar to those astronauts are expected to experience on future missions to Mars that will have crew members from different nations.

NASA is looking for highly motivated and healthy individuals between the ages of 30 and 55 who are fluent in both English and Russian. They must also have an MS., PhD, MD. or have completed military officer training.

The space agency will consider other participants with a bachelor’s degree and other qualifications such as military or professional experience.

They will study the psychological and physiological effects astronauts are likely to face as a result of isolation on long missions.

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NASA is also looking for people who are fluent in both English and Russian. Pixabay

According to NASA, participants will experience environmental aspects similar to those astronauts are expected to experience on future missions to Mars.

A small international crew will live together in isolation for eight months conducting scientific research, using virtual reality and performing robotic operations among a number of other tasks during the lunar mission.

The research is being done to study the effects of isolation and confinement as participants work to complete simulated space missions.

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Results from ground-based missions like this help NASA prepare for the real-life challenges of space exploration and provide important scientific data to solve some of these problems and to develop countermeasures.

Participants will be compensated, and there are varying levels of pay depending on whether you’re associated with NASA.

This study builds on a four-month study conducted in 2019. The SIRIUS-19 analog mission had six participants — two US citizens and four Russians — isolated in a metal habitat that acted as their spacecraft, lunar lander and home. (IANS)

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Scientists to Probe Jupiter’s Violent Storms, Lightning Strikes

Scientists from various organisations probe Jupiter's violent Storms and lightning strikes

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Scientists to probe Jupiter's violent storms and lightning strikes. Pixabay

NASA’s Hubble Space Telescope and the ground-based Gemini Observatory in Hawaii have teamed up with the Juno spacecraft to probe the mightiest storms on the giant planet Jupiter.

The images, part of a multi-year joint programme, revealed that lightning strikes, and some of the largest storm systems that create them, are formed in and around large convective cells over deep clouds of water ice and liquid.

The new observations also confirm that dark spots in the famous Great Red Spot are actually gaps in the cloud cover and not due to cloud colour variations.

Three years of imaging observations using the international Gemini Observatory have probed deep into Jupiter’s cloud tops. The ultra-sharp Gemini infrared images complement optical and ultraviolet observations by Hubble and radio observations by the Juno spacecraft to reveal new secrets about the giant planet.

“The Gemini data were critical because they allowed us to probe deeply into Jupiter’s clouds on a regular schedule,” said Michael Wong of University of California, Berkeley.

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Scientists to probe Jupiter’s violent storms and lightning strikes. Pixabay

“We used a very powerful technique called lucky imaging,” added Wong.

With lucky imaging, a large number of very short exposure images are obtained and only the sharpest images, when the Earth’s atmosphere is briefly stable, are used. The result in this case is some of the sharpest infrared images of Jupiter ever obtained from the ground.

According to Wong, “These images rival the view from space.”

Gemini North’s Near Infrared Imager (NIRI) allows astronomers to peer deep into Jupiter’s mighty storms, since the longer wavelength infrared light can pass through the thin haze but is obscured by thicker clouds high in Jupiter’s atmosphere.

This creates a “jack-o-lantern”-like effect in the images where the warm, deep layers of Jupiter’s atmosphere glow through gaps in the planet’s thick cloud cover.

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Jupiter’s violent storms and lightning strikes to be probed by scientist. Pixabbay

The detailed, multiwavelength imaging of Jupiter by Geminiand Hubble has, over the past three years, proven crucial to contextualizing the observations by the Juno orbiter, and to understanding Jupiter’s wind patterns, atmospheric waves, and cyclones.

The two telescopes, together with Juno, can observe Jupiter’s atmosphere as a system of winds, gases, heat, and weather phenomena, providing coverage and insight not unlike the network of weather satellites meteorologists use to observe Earth.

Because the Hubble and Gemini observations are so important for interpreting Juno data, Wong and his colleagues are making all of the processed data easily accessible to other researchers through the Mikulski Archives for Space Telescopes (MAST) at the Space Telescope Science Institute in Baltimore, Maryland.

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The results were published in The Astrophysical Journal Supplement Series. (IANS)