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
Bolsonaro diagnosed with skin cancer amid coup conviction
Former Brazilian president Jair Bolsonaro has been diagnosed with skin cancer while serving a historic sentence for attempting a coup d’état. His medical team confirmed that the lesions have been removed and that, for now, he does not require further procedures, though he will need regular monitoring.
On Wednesday, September 17, Bolsonaro’s doctors confirmed the diagnosis. The announcement comes shortly after the former leader was convicted of orchestrating an attempted coup.
According to his physician, Claudio Birolini, Bolsonaro has “squamous cell carcinoma, which is neither the most benign nor the most aggressive form — it is intermediate.” Birolini warned, however, that this type of skin cancer “can carry more serious consequences.”
International
Milei praises Paraguay’s growth, calls Argentina’s last 20 years a ‘decline’
Argentine President Javier Milei praised Paraguay’s economic growth over the past two decades during a speech before the Paraguayan Congress on Wednesday (Sept. 17, 2025), crediting it to incentives that favored capitalism. At the same time, he contrasted that progress with what he described as Argentina’s deepening “decline” during the same period.
“If we compare the last 20 years of Paraguay with those of the Argentine Republic, we will find almost diametrically opposite results,” Milei told lawmakers during a special session of Parliament on the second and final day of his official visit to Asunción.
“While you have not stopped growing, we have deepened our decline. If we understand incentives as the engine of capitalism, Paraguay focused on preserving and strengthening them, while Argentina dedicated itself to chaining, directing, and suffocating them,” the right-wing leader stated.
International
Trump administration launches large-scale immigration operation in Chicago
The administration of U.S. President Donald Trump intensified a large-scale immigration operation in the Chicago area with the arrival of additional Border Patrol agents on Tuesday and the presence of Department of Homeland Security (DHS) Secretary Kristi Noem during a raid.
Noem posted a video on her X account showing the immigration operation, in which DHS reportedly removed “violent criminals” from the streets. The footage shows Noem observing the arrest of a man taken into custody at his home early Tuesday morning at an undisclosed location.
“I was in Chicago today to make it clear that we will not back down,” the secretary wrote. “Our work is just beginning,” she added.
The warning from Noem was echoed by U.S. Customs and Border Protection (CBP) Chief Gregory Bovino, who posted a video on X Tuesday showing multiple Border Patrol vehicles arriving in the city with the caption: “Chicago, we are here!”
Bovino, who led the immigration crackdown in Los Angeles implemented since last June, said the team will remain in Chicago to continue the mission they started in California.
Operation “Midway Blitz” is currently focused on the Chicago metropolitan area and its suburbs. Activists and residents have reported sightings of masked agents and unmarked vehicles in predominantly Latino neighborhoods.
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