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 Raises Possibility of “Friendly Takeover” of Cuba Amid Deepening Crisis
The President of the United States, Donald Trump, reiterated Monday the possibility that Washington could pursue a “friendly takeover” of Cuba, amid the severe crisis facing the island following the oil blockade promoted by the U.S. government.
Speaking at a press conference in Miami, the president said that U.S. Secretary of State Marco Rubio is currently “negotiating” with representatives of the Cuban government, although authorities in Havana have repeatedly denied that such talks are taking place.
Trump suggested that Washington could play a more direct role in the island’s future.
“It may be a friendly takeover. It may not be a friendly takeover. It wouldn’t matter because they’re really down to, as they say, fumes. They have no energy, they have no money. They are in deep trouble on a humanitarian basis, and we really don’t want to see that,” the U.S. president said.
The president also argued that the Cuban government had long depended heavily on support from Venezuela, particularly oil supplies.
According to Trump, that support has been drastically reduced following measures adopted by Washington.
“They were living off Venezuela. Venezuela doesn’t send them energy, fuel, oil, money, or anything anymore. They couldn’t survive without Venezuela, they couldn’t have made it, and we cut everything off,” Trump said.
International
Mexico, Brazil and Colombia left out of Trump’s “Shield of the Americas” summit
Left-wing governments in Latin America, including Mexico, Brazil and Colombia, were excluded from the “Shield of the Americas” summit convened by U.S. President Donald Trump.
The meeting, held in Miami, Florida, brought together 12 presidents from across the continent to discuss strategies to combat drug cartels and organized crime.
In Mexico’s case, President Claudia Sheinbaum had recently rejected the use of military force as a solution to the drug trafficking problem. She has argued that her administration’s security strategy is producing results and emphasized that force alone is not the answer.
During the summit, Trump said that most narcotics entering the United States come through Mexico and referred to his previous conversations with Sheinbaum on the issue.
“I like the president very much, she’s a very good person,” Trump said. “But I told her: ‘Let me eradicate the cartels.’ And she said, ‘No, no, no, please, president.’ We have to eradicate them. We have to finish them.”
The remarks highlighted ongoing differences between Washington and Mexico over how to confront drug trafficking networks operating across the region.
International
Trump announces 17-nation alliance in the Americas to “destroy” drug cartels
U.S. President Donald Trump announced on Saturday the creation of a 17-nation alliance across the Americas aimed at dismantling drug cartels, during a regional summit held at his golf club in Doral.
Speaking to a group of allied leaders at the Shield of the Americas Summit, Trump said the initiative would rely on military force to eliminate powerful criminal networks operating throughout the hemisphere.
“The heart of our agreement is the commitment to use lethal military force to destroy these sinister cartels and terrorist networks. Once and for all, we will put an end to them,” Trump told the assembled heads of state.
The Republican leader argued that large portions of territory in the Western Hemisphere have fallen under the control of transnational gangs and pledged U.S. support to governments seeking to confront them. He even suggested the potential use of highly precise missiles against cartel leaders.
Before making the announcement, Trump greeted the roughly twelve leaders attending the summit, including close allies such as Javier Milei, Daniel Noboa and Nayib Bukele, whom he described as a “great president.”
The meeting forms part of Trump’s broader regional strategy inspired by his reinterpretation of the Monroe Doctrine, which seeks to reinforce Washington’s influence in the Americas, strengthen security cooperation and counter the growing presence of powers such as China.
Trump pointed to recent U.S. actions in the region as examples of his administration’s approach, including the operation that led to the capture of former Venezuelan president Nicolás Maduro earlier this year.
The summit also takes place amid escalating international tensions following the conflict launched last week by the United States and Israel against Iran.
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