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

German president warns Iran war could spread and disrupt Strait of Hormuz

The president of Germany, Frank-Walter Steinmeier, warned Monday that the war involving Iran could expand and further disrupt shipping through the strategic Strait of Hormuz. He urged a swift end to hostilities between Iran, United States and Israel.

Speaking in Panama City during a joint appearance with Panamanian President José Raúl Mulino, Steinmeier said available information suggests Iran has significant capacity to disrupt maritime traffic through the key oil route.

“Iran has considerable potential to interfere with shipping through the Strait of Hormuz,” Steinmeier said through an interpreter. “We should therefore reach an end to the hostilities as soon as possible and call on all parties involved to make that happen.”

The remarks came during Steinmeier’s visit to Panama, the first by a German president to the Central American nation.

The German leader described the possibility of the conflict spreading as “very dangerous,” saying recent developments indicate that such a scenario cannot be ruled out.

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Over the weekend, U.S. President Donald Trump urged allied nations to help ensure safe passage for ships through the Strait of Hormuz after Iran moved to block the waterway in response to U.S. strikes. However, several allies—particularly in Europe—have shown little support for the proposal.

“Some are very enthusiastic, others are not, and some are countries we have helped for many years,” Trump told reporters at the White House. “We have protected them from terrible external threats, and they’re not that enthusiastic. And the level of enthusiasm is important to me.”

Meanwhile, Kaja Kallas, the European Union’s top diplomat, said the Strait of Hormuz falls “outside NATO’s scope” and stressed that “the war involving Iran is not Europe’s war.”

International

Mexico security chief meets DEA director in Washington to boost anti-drug cooperation

Mexico’s Secretary of Security and Citizen Protection, Omar García Harfuch, met in Washington with the head of the U.S. Drug Enforcement Administration, Terrance Cole, to discuss cooperation in the fight against drug trafficking and illegal arms flows.

The Mexican official said Monday on social media that he attended the meeting in representation of the Mexican government’s Security Cabinet.

“In Washington, D.C., I represented the Security Cabinet to hold talks with DEA Director Terrance Cole on the importance of strengthening bilateral cooperation to combat drug trafficking, curb the flow of weapons into our country, and reduce violence in Mexico through significant arrests,” García Harfuch wrote.

He added that, following instructions from Mexican President Claudia Sheinbaum, the government will continue strengthening international cooperation on security matters.

For his part, Cole said the meeting focused on cross-border collaboration to tackle drug trafficking and to build safer communities on both sides of the border.

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The meeting comes as Mexico and the United States begin a new round of dialogue on economic and security issues.

Earlier Monday, President Claudia Sheinbaum said she will look for the “best moment” to meet with U.S. President Donald Trump, adding that maintaining a good relationship with Washington is a priority for her administration.

International

Venezuela’s foreign minister accuses UN rights chief of “immoral bias”

Venezuelan Foreign Minister Yván Gil criticized the United Nations High Commissioner for Human Rights, Volker Türk, accusing him of having an “immoral bias” and acting as an “echo chamber for falsehoods” regarding the situation in Venezuela.

Gil’s remarks came after Türk stated that his office had not received an official list from Venezuelan authorities detailing the release of political prisoners, nor authorization to carry out visits related to the issue.

“The UN High Commissioner for Human Rights insists on a narrative biased against our country, repeating unfounded accusations while deliberately omitting the impact of unilateral coercive measures on the rights of the Venezuelan people,” Gil said in a message posted on his Telegram channel.

Without directly addressing the question of prisoner releases, the Venezuelan foreign minister also accused Türk of aligning with what he described as the “agenda of extremism in Venezuela.”

Gil added that, despite serious human rights violations occurring in other parts of the world, the UN official has chosen to maintain what he described as an “immoral bias” against Venezuela.

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The criticism is part of a broader dispute between the Venezuelan government and the UN human rights office over reports and investigations concerning the human rights situation in the country.