International

Learn about seven important NASA discoveries

Photo: NASA

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.

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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).

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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.

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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.

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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.

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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

Mexican Navy Ships Deliver Third Shipment of Humanitarian Aid to Cuba

Two logistics support vessels from the Mexican Navy — the ARM Papaloapan and the ARM Huasteco — docked again on Friday in the bay of Havana carrying a third shipment of humanitarian aid for Cuba.

The vessels had previously arrived on the Caribbean island on February 28 with a second cargo that included 1,200 tons of food, sent to help alleviate the country’s ongoing crisis, which has worsened following the U.S. oil restrictions affecting fuel supplies to the island.

Cuba’s deputy foreign minister Josefina Vidal confirmed the new shipment in a social media post.

“Two ships carrying a third shipment of aid from the Government and the people of Mexico for the Cuban people are now arriving at the port of Havana. Thank you Mexico for your solidarity with Cuba,” she wrote.

Previous aid shipments

During the second shipment, the Papaloapan transported 1,078 tons of beans and powdered milk, while the Huastecocarried 92 tons of beans and 23 tons of assorted food products collected by social organizations with support from the government of Mexico City.

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In recent months, Mexico has become the largest provider of humanitarian aid to Cuba, sending around 2,000 tons of supplies, mostly staple foods and hygiene products, in the two shipments prior to Friday’s delivery.

The first shipment alone included 814 tons of food.

Cuba praises Mexico’s support

Hours before the ships arrived, Cuban President Miguel Díaz-Canel highlighted Mexico’s support during a televised appearance, describing the country as “a friendly and brotherly nation that has shown tremendous solidarity,”particularly praising Mexican President Claudia Sheinbaum.

Díaz-Canel also addressed reports suggesting that Mexican donations were being resold in state-run stores, dismissing them as a “disinformation campaign” promoted by right-wing groups.

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International

Ecuador Declares 60-Day National Emergency After Deadly Floods and Landslides

Ecuador has declared a 60-day national emergency to address the impact of a severe rainy season that has left 11 people dead and more than 50,000 affected since January, the government’s disaster management authority announced Friday.

Prolonged heavy rains accompanied by thunderstorms have caused river overflows and landslides, mainly in the coastal provinces of Guayas, El Oro, Esmeraldas, Los Ríos, Manabí and Santa Elena, as well as in the Andean provinces of Lojaand Chimborazo.

According to the Secretariat for Risk Management of Ecuador, the emergency declaration was issued “due to the level of impact caused nationwide on the population, the road network, infrastructure, and livelihoods.”

“The emergency declaration is aimed at responding to the effects and negative impacts and preventing their further spread,” the agency said in a statement.

International

Trump Pushes for Regime Change in Cuba as Havana Confirms Talks With Washington

U.S. President Donald Trump has made no secret of his desire for political change in Cuba, located just 150 kilometers from the United States. Washington considers the island an “exceptional threat,” citing its close ties with Russia, Chinaand Iran, longtime allies of Havana.

Trump has urged Cuba to “reach a deal” with Washington or face consequences, as the island struggles with a severe energy crisis that has nearly paralyzed its economy after the United States cut oil shipments from Venezuela, its main fuel supplier. The U.S. has also warned other countries against selling fuel to Havana.

Cuban President Miguel Díaz-Canel confirmed that Cuban officials have recently held talks with representatives of the U.S. government. The statement came during a meeting with senior members of the ruling Communist Party of Cuba and the executive committee of the Council of Ministers, according to footage broadcast on Cuban television.

“These conversations have been aimed at seeking solutions through dialogue to the bilateral differences that exist between our two nations,” Díaz-Canel said.

Reports of intermediaries and possible negotiations

According to television images, among those attending the meeting was Raúl Guillermo Rodríguez Castro, grandson of former Cuban leader Raúl Castro. Although he holds no official government position, U.S. media have identified him as a possible interlocutor with U.S. Secretary of State Marco Rubio in what have been described as secret discussions between Washington and Havana.

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For some Cubans, any potential agreement with Washington is viewed pragmatically. “As long as it benefits us, we can reach an agreement — but on our terms,” said Sergio Guerra, a 55-year-old agricultural vendor, speaking to AFP.

Díaz-Canel’s remarks confirm earlier statements by Trump, who indicated in January that his administration had already begun contacts with senior Cuban officials.

Mexico calls for diplomacy

Meanwhile, Mexico welcomed the possibility of dialogue after recently sending more than 2,000 tons of humanitarian aid to Cuba to help mitigate the crisis.

Mexican President Claudia Sheinbaum said her country would always promote peace and diplomatic dialogue, particularly in response to what she described as the long-standing injustice of the U.S. embargo on the Cuban people.