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 replaces Homeland Security Secretary Kristi Noem with Senator Markwayne Mullin
U.S. President Donald Trump announced Thursday the departure of Kristi Noem as Secretary of Homeland Security, one of the key architects of the administration’s policy of deporting undocumented immigrants.
Noem, who has been assigned a new role as a “special envoy” to Latin America, will be replaced starting March 31 by Republican Senator Markwayne Mullin, the president said in a message posted on his social media platform Truth Social.
According to media reports, Trump made the decision after Noem’s recent hearings in Congress, during which she faced tough questions regarding the awarding of a major public contract.
International
Young Woman Will Represent Mexico at 2026 World Cup Opener, Says President Sheinbaum
Mexico’s president, Claudia Sheinbaum, announced Thursday that the young Mexican woman who proves to have the best ball control skills will receive her personal ticket to the opening match of the 2026 FIFA World Cup in Mexico City.
The left-wing leader had previously said she would not attend the tournament’s opening game on June 11 in the Mexican capital and instead planned to give away the ticket number 00001, reserved for her by FIFA.
During her morning press conference, Sheinbaum explained that women between 16 and 25 years old can participate by submitting a video through an official platform.
“What do they have to do? Keep the ball in the air for one minute,” she said, referring to the soccer juggling challenge that will determine the winner.
Among the judges selecting the winner will be Mexican striker Charlyn Corral, the world’s top female scorer who set a ball-control record in 2005, and professional referee Katia Itzel García.
Sheinbaum also revealed that she plans to watch the opening match during a large public gathering with giant screens in the Zócalo, located in the historic center near the presidential palace.
“Very few people will be able to attend the opening. So I will watch it here with the people, and a young woman will represent me and the people of Mexico,” the president said.
Sheinbaum has previously commented on the high cost of World Cup tickets, as well as the difficulty of obtaining them in a metropolitan area with more than 20 million inhabitants.
In the 2026 tournament, jointly hosted by United States, Mexico, and Canada, Mexico will stage 13 matches in Mexico City, Guadalajara, and Monterrey.
The opening match will take place at the legendary Estadio Azteca, which previously hosted World Cup opening ceremonies in 1970 and 1986, occasions when the presidents in attendance were famously booed by the crowd.
International
Claudia Sheinbaum: Operation Against ‘El Mencho’ Was Based on Pending Arrest Warrants
Mexico’s President Claudia Sheinbaum on Wednesday rejected claims that the military operation that resulted in the death of Nemesio Oseguera Cervantes, known as “El Mencho,” leader of the Jalisco New Generation Cartel (CJNG), was carried out under pressure from the United States government.
Sheinbaum explained that the deployment of federal forces was aimed at executing outstanding arrest warrants against Oseguera Cervantes, who was considered one of the most wanted criminals in both Mexico and the United States.
“That was not the objective (to ease pressure from the United States). It is very important, and I want to repeat it. This individual had an arrest warrant, or several,” Sheinbaum said, referring to the operation conducted on February 22.
According to the president, the initial goal was to capture Oseguera Cervantes, but military forces responded after coming under attack during the intervention.
“The operation was to detain him. The problem is that they were attacked — the Secretariat of National Defense — and they responded at that moment,” she said.
The president insisted that the action was not carried out in response to external demands, although she acknowledged intelligence cooperation with the United States.
“It was not done in any way because of pressure from the United States, not at all. Of course, there was intelligence information from the United States that was used specifically,” she concluded.
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