International
Learn about seven important NASA discoveries
October 15 |
As part of the commemoration of the discovery of the exoplanet Kepler 452-b, by the National Aeronautics and Space Administration (NASA) of the United States (U.S.), this Sunday is worth knowing seven important discoveries of this U.S. agency in recent years.
The cosmic body identified by the Kepler telescope, to which it owes its name, was confirmed by NASA on July 23, 2015.
Kepler-452b is an exoplanet, a planet revolving around a star other than the Sun, which in this case is a G2-type yellow dwarf, which is known as Kepler-452.
The agency responsible for the civil space program, as well as for aeronautical and aerospace research, since its foundation in 1958 has developed space exploration and science projects, which have led to relevant discoveries in several aspects.
1) The study of twins
In April 2019 NASA published the controversial results of an investigation known as the Twins Study.
A set of ten teams of researchers from the United States (U.S.) set out to observe the changes that might occur to a human being when exposed to the risk of traveling into space for a year.
The scientists compared a wide range of samples and measurements from identical twin brothers, retired astronauts Scott Kelly and Mark Kelly. Scott was sent into space, while Mark remained on Earth.
One of the results revealed the lengthening of the space-bound twin’s telomeres, special features at the ends of each strand of DNA that generally shorten with age, which demonstrated how a human body can adapt to a variety of changes generated by the environment of outer space flight.
2) Observing the Earth from space
There are a wide variety of scientific studies based on images that NASA crew members take using Crew Earth Observations (CEO).
NASA’s orbiting space station carries its crew and cameras over different points on Earth at different times and the station revisits the sites at varying intervals, allowing images of many areas to be collected at different times of the day and night.
In this way experts discovered that artificial lighting at night affects the behavior of urban wildlife, according to a study of light levels in the city of Chicago that was based on images taken by astronauts from the International Space Station (ISS).
3) A revealing microscope
A miniaturized fluorescence microscope made it possible to observe changes in living cells in microgravity.
This microscope enables real-time analysis of cell behavior during long-duration spaceflight. Its rapid imaging capability allows monitoring of cellular and molecular reactions that can happen more rapidly in altered gravity environments.
The implementation of real-time analysis methods on the station furthers the understanding of how cells in the human body react and adapt to the space environment.
4) The universe in better resolution
NASA’s Neutron Star Interior Composition Explorer (Nicer) facilitates measurements with excellent precision of neutron stars, objects containing ultra-dense matter at the threshold of black hole collapse.
In early 2018 JAXA’s All-Sky X-ray Imaging Monitor (MAXI) captured a new transient X-ray source in the sky designated MAXI J1820 + 070.
Nicer began monitoring the source and discovered that it was a binary black hole system with a mass much larger than that of the Sun. In addition, recorded measurements have revealed how the inner edge of a black hole’s accretion disk (and the corona above it) vary in size and shape as a black hole consumes material from a companion star.
5) Spaceflight decreases crew performance on Earth.
Astronauts’ bodies adapt to microgravity while in space. When crew members return to Earth, they show significant decreases in manual dexterity, multitasking, motion perception, and the ability to operate a vehicle.
NASA researchers confirmed that the post-flight performance decline was related to spaceflight factors and not to other factors such as lack of practice or sleep.
6) Cement in space
Another discovery confirmed by NASA suggests the possibility of building places to live on the Moon or Mars.
It is a research called Microgravity Investigation of Cement Solidification (MICS), which reveals that samples processed in space show considerable changes in the microstructure of cement compared to those processed on Earth, such as increased porosity, or the presence of more open spaces.
Showing that cement can harden in space is of great importance for future lunar constructions.
7) Keep it clean
New materials are needed to slow the growth and spread of bacteria resistant to antibiotics and silver coatings, according to research called Biorisk-KM-Metally, conducted by the Russian space agency (Roscosmos) and confirmed by NASA.
The researchers conducted tests on an antimicrobial coating called AGXX® and compared it with silver and stainless steel coatings. For the study, crew members placed 12 plates on the space station’s toilet door, with one plate coated in each tested material to be collected at six, 12 and 19 months.
In all time lapses, the experts found that the AGXX® coating had significantly fewer bacteria than surfaces coated with silver and stainless steel. These data are useful for the development of ideal technologies to reduce the risk of biological damage to space hardware and equipment.
International
Trump criticizes Panama Canal fees and demands U.S. control over strategic waterway
U.S. President-elect Donald Trump criticized what he described as unfair fees imposed on American ships passing through the Panama Canal and threatened to demand that Washington take back control of the strategic waterway.
“Our Navy and commerce have been threatened in a very unjust and reckless way. The rates that Panama charges are ridiculous,” Trump wrote on his Truth Social platform.
The president-elect also denounced the growing influence of China in the canal, a situation he called concerning as U.S. businesses depend on the waterway to transport goods between the Atlantic and Pacific Oceans.
“This complete scam against our country will end immediately,” he stated.
The Panama Canal, completed by the United States in 1914, was handed over to Panama under the 1977 treaty signed by Democratic President Jimmy Carter. Panama took full control of the commercial passage in 1999.
“It was exclusively for Panama to manage, not China or anyone else,” Trump said. “We would never allow it to fall into the wrong hands!”
“If Panama cannot guarantee a ‘safe, efficient, and reliable’ operation of the canal, we will demand that the Panama Canal be returned to us in its entirety, without a doubt,” the Republican added.
Panamanian authorities did not immediately respond to Trump’s statements. While he will assume office on January 20, Trump has been exerting his political influence in the final days of President Joe Biden’s administration.
Five percent of global maritime trade passes through the Panama Canal, which allows vessels traveling from Asia to the U.S. East Coast to avoid the long and dangerous route around the southern tip of South America.
The countries that use the Panama Canal the most are the United States, China, Japan, and South Korea.
In October, the Panama Canal Authority reported earnings of nearly $5 billion in the last fiscal year.
International
Putin vows retaliation following drone attack on luxury building in Kazan
Russian President Vladimir Putin promised more “destruction” in Ukraine on Sunday, in response to a drone strike that hit a residential building in the city of Kazan, located in central Russia, on Saturday.
Russia accused Ukraine of launching a “massive” drone attack, which struck a luxury apartment block in Kazan, about 1,000 kilometers from the border.
Videos shared on Russian social media show drones hitting a high-rise glass building. No casualties have been reported as a result of the attack.
In his statements, Putin addressed the local leader of Tatarstan, the region where Kazan is located, during a virtual ceremony marking the opening of a road.
The attack in Kazan is the latest in a series of increasingly frequent bombings in this nearly three-year-old conflict. Ukraine has not commented on the attack.
Putin had previously threatened to strike the center of Kyiv with a hypersonic ballistic missile in response to Ukrainian attacks on Russian territory.
The Russian Ministry of Defense stated that the recent Russian strikes on Ukrainian energy facilities were retaliation for Ukraine’s use of Western-supplied missiles to target Russian territory.
International
Small plane crashes in Gramado, Brazil, killing nine people
At least nine people were killed on Sunday after a small aircraft crashed in a commercial area of the tourist city of Gramado, in the southern Brazilian state of Rio Grande do Sul, authorities confirmed.
“There are nine confirmed deaths according to Civil Defense services, and there are no survivors from the plane,” said Cléber dos Santos Lima, director of the Interior Police Department of the Civil Police of the state, in a statement to AFP.
Authorities have not yet confirmed the exact number of passengers and crew aboard the aircraft, a turbo-prop Piper Cheyenne 400. However, Civil Defense had previously stated that “preliminarily, the plane was carrying ten people.”
The plane crashed on Sunday morning “into the chimney of a building, then onto the second floor of a house, and finally fell onto a furniture store,” according to a statement from the Rio Grande do Sul Public Security Secretariat.
Trump criticizes Panama Canal fees and demands U.S. control over strategic waterway
Putin vows retaliation following drone attack on luxury building in Kazan
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