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New Gamma-Ray Collection Named After Hulk, Godzilla: NASA

Since 2008, Fermi's Large Area Telescope (LAT) has been scanning the entire sky each day, mapping and measuring sources of gamma rays, the highest-energy light in the universe.

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NASA to use Blockchain technology for air traffic management. Pixabay

NASA has used certain characters from modern myths such as the “Hulk” and “Godzilla” to name its new set of 21 gamma-ray constellations constructed in celebration of its Fermi Gamma-ray Space Telescope’s 10th year of operations.

Fermi has mapped about 3,000 gamma-ray sources — 10 times the number known before its launch and comparable to the number of bright stars in the traditional constellations.

“For the first time ever, the number of known gamma-ray sources was comparable to the number of bright stars, so we thought a new set of constellations was a great way to illustrate the point,” NASA’s Goddard Space Flight Center’s Elizabeth Ferrara who led the constellation project said in a statement.

Gamma-ray constellation
The background shows the gamma-ray sky as mapped by Fermi. The prominent reddish band is the plane of our own galaxy, the Milky Way; brighter colors indicate brighter gamma-ray sources. NASA

 

“Developing these unofficial constellations was a fun way to highlight a decade of Fermi’s accomplishments,” Julie McEnery, the Fermi project scientist at NASA’s Goddard Space Flight Center said.

Comic book fans who know the backstory of Hulk, the big, green, angry alter ego of Bruce Banner, whose experiments with gamma rays went terribly wrong, could easily appreciate NASA’s pick in naming one of its constellations.

Gamma rays are the strongest form of light. They pack enough punch to convert into matter under the right circumstances, a transformation both Banner and the Hulk would certainly appreciate.

NASA’s choice of Godzilla constellation is linked to its trademark weapon “heat ray,” a fiery jet. This bears at least a passing resemblance to gamma-ray jets associated with black holes and neutron stars.

Gamma-ray constellation
NASA names new gamma-ray constellations after Godzilla, Hulk

 

Godzilla ranks as one of cinema’s most famous monsters and is among the most recognisable symbols of Japanese popular culture.

In the original 1954 movie, nuclear weapons tests disturb the creature’s deep ocean habitat, and it emerges from the sea to wreak havoc in Japan.

The 21 gamma-ray constellations also include famous landmarks — such as Sweden’s recovered warship, Vasa, the Washington Monument and Mount Fuji in Japan — in countries contributing to Fermi science.

Since 2008, Fermi’s Large Area Telescope (LAT) has been scanning the entire sky each day, mapping and measuring sources of gamma rays, the highest-energy light in the universe.

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The emission may come from pulsars, nova outbursts, the debris of supernova explosions and giant gamma-ray bubbles located in our own galaxy, or supermassive black holes and gamma-ray bursts — the most powerful explosions in the cosmos — in others.

“Fermi is still going strong, and we are now preparing a new all-sky LAT catalog,” said Jean Ballet, a Fermi team member at the French Atomic Energy Commission in Saclay.

“This will add about 2,000 sources, many varying greatly in brightness, further enriching these constellations and enlivening the high-energy sky!” (IANS)

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NASA Astronauts Spacewalk to Change ISS Batteries

Spacewalkers have now spent a total of 55 days, 21 hours and 39 minutes working outside the station

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NASA researchers have created the atmosphere of a super-hot planet outside our solar system, here on Earth. Pixabay

Two NASA astronauts – Nick Hague and Anne McClain – have successfully completed an over six hour spacewalk and replaced the ageing batteries on the International Space Station (ISS).

During the six hour, 39 minute spacewalk, Hague and McClain replaced nickel-hydrogen batteries with newer, more powerful lithium-ion batteries for the power channel on one pair of the station’s solar arrays, NASA said in a statement on Friday.

They also installed adapter plates and hooked up electrical connections for three of the six new lithium-ion batteries installed on the station’s starboard truss.

These new batteries provide an improved power capacity for operations with a lighter mass and a smaller volume than the nickel-hydrogen batteries.

The batteries store power generated by the station’s solar arrays to provide power to the station when the station is not in the sunlight, as it orbits the Earth during orbital night.

In addition, the astronaut duo also removed debris from outside of the station, securing a tieback for restraints on the Solar Array Blanket Box, NASA said.

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NASA will also have its first all-female spacewalk at the end of the month, when astronauts Anne McClain and Christina Koch will get to float around in space. The spacewalk will last about seven hours, according to the US space agency. Pixabay

McClain will again take a spacewalk on March 29 along with flight engineer Christina Koch to work on a second set of battery replacements on a different power channel in the same area of the ISS.

This would be the first-ever spacewalk with all-female spacewalkers, NASA said.

A third spacewalk on April 8 by Hague and David Saint-Jacques of the Canadian Space Agency will lay out jumper cables between the Unity module and the S0 truss, at the midpoint of the ISS’s backbone.

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This work will establish a redundant path of power to the Canadian-built robotic arm, known as Canadarm2. They will also install cables to provide for more expansive wireless communications coverage outside the orbital complex, as well as for enhanced hardwired computer network capability.

Space station crew members have until now conducted 214 spacewalks in support of assembly and maintenance of the orbiting laboratory.

Spacewalkers have now spent a total of 55 days, 21 hours and 39 minutes working outside the station. (IANS)