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
Iran Rejects Negotiations With U.S. as Strait of Hormuz Remains Blocked Amid New Attack
Tensions remained high in the Strait of Hormuz on Monday after a vessel was hit by a projectile, despite U.S. President Donald Trump’s claims that negotiations with Iran were moving forward and that the strategic maritime route could reopen as early as Tuesday.
Tehran denied that direct talks were taking place, but Trump insisted that discussions were underway and described the situation as a final opportunity for Iran to reach an agreement.
“This is the last chance they have to sign a good document,” Trump told reporters at the White House, adding that the reopening of the Strait of Hormuz could happen “literally tomorrow” Tuesday.
The comments came after another escalation in rhetoric from Washington. Last week, Trump threatened Iran with military strikes before unexpectedly changing course on Sunday and announcing that negotiations with Tehran would resume.
Iranian Foreign Ministry spokesman Esmail Baqai rejected the U.S. president’s version of events, stating that Tehran was not holding negotiations with Washington.
“At this moment, we are not negotiating with the United States. We are negotiating with Oman to guarantee safe passage through the Strait of Hormuz,” Baqai said.
Earlier, the Iranian official said that Tehran was close to reaching an agreement with Oman, which lies across the Strait of Hormuz, to reopen the crucial waterway that plays a key role in global energy trade.
The maritime route has remained blocked by Iran since the outbreak of hostilities following U.S. and Israeli strikes against the Islamic Republic on February 28.
Meanwhile, Yemen’s Houthi rebels announced Tuesday that they had launched an attack against an airport in Saudi Arabia. The Iran-backed group had previously disrupted the passage of Saudi vessels through the Red Sea, an alternative route used for crude exports by the world’s largest oil producer.
The continued instability in the region has raised concerns over global energy supplies, as the Strait of Hormuz remains one of the most important chokepoints for international oil shipments.
International
Lula Launches Re-Election Campaign Amid Rising Tensions With Trump
Brazilian President Luiz Inácio Lula da Silva is set to be officially nominated for re-election by his Workers’ Party (PT), marking the start of his campaign for a fourth presidential term.
The nomination takes place during the party’s national convention in São Paulo, Brazil’s economic hub, where around 3,000 supporters gathered to back the veteran leftist leader.
“Today I’m here because Lula’s policies changed my life and my family’s. Thanks to him, we finally own a home after eight generations without one,” said Cristiane Rosa Julho, a 51-year-old social worker attending the event dressed in the PT’s signature red.
Seeking the presidency for the seventh time in his political career, Lula is expected to face Senator Flávio Bolsonaro in next year’s election.
The 45-year-old senator is the son of former far-right President Jair Bolsonaro, who has been jailed over his alleged role in an attempted coup following his defeat to Lula in the 2022 election.
The party convention opened with videos highlighting Lula’s social initiatives and speeches by four women praising his leadership, while supporters waved PT flags and held signs reading “We Want Lula as President” and “Brazil Is Not for Sale.”
The campaign begins amid growing tensions with the United States and President Donald Trump, a close ally of the Bolsonaro family who has openly backed several conservative candidates across Latin America.
Last week, Lula warned against foreign interference, declaring, “In Brazil, we do not accept anyone sticking their nose where it doesn’t belong.”
In July, the United States imposed two rounds of tariffs on Brazilian products, accusing the country of unfair trade practices. The measures followed earlier restrictions introduced in 2025, encouraged by Jair Bolsonaro’s son Eduardo Bolsonaro, in response to legal proceedings against the former president.
Lula has vowed to wage what he called a “war of truth against lies” in response to Washington’s pressure and accused Flávio Bolsonaro of undermining Brazil’s interests by allegedly helping the United States damage the country’s economy. The senator has denied the accusations.
The Brazilian president also claims Washington is attempting to influence the country’s political landscape in an effort to prevent his re-election.
International
Truck bomb attack near police station in Colombia leaves 14 injured ahead of presidential inauguration
A truck loaded with explosives exploded on Saturday near a police station in the Colombian city of Cúcuta, close to the Venezuelan border, leaving 14 people injured in an attack that occurred six days before president-elect Abelardo de la Espriella’s inauguration.
The blast took place in the early hours of the morning and was allegedly carried out by members of the National Liberation Army (ELN), who detonated a vehicle packed with explosives. According to the latest report from the Colombian Army, the attack injured 11 police officers and three civilians.
The explosion involved around 15 explosive devices, and two of the wounded officers are in critical condition and “fighting for their lives,” said William Villamizar, governor of Norte de Santander, the region where the attack occurred.
The incident comes amid Colombia’s worst wave of violence in the past decade, with armed groups expanding their presence in several areas of the country.
“I strongly condemn the cowardly terrorist attack carried out in Cúcuta against our National Police. Terrorism will not intimidate Colombia or break the determination of Colombians to live in peace and security,” De la Espriella said in a post on X.
The conservative lawyer, who has been described as a far-right figure, will take office on August 7, replacing Gustavo Petro, Colombia’s first left-wing president. The inauguration ceremony will be held in Cali, the country’s third-largest city and a frequent target of attacks by armed groups.
The United Nations condemned what it described as an “indiscriminate attack” that caused not only injuries but also “fear and distress among the population.”
De la Espriella has repeatedly warned about an alleged plot against his life. Meanwhile, President Gustavo Petro, who is currently visiting Cuba, has not commented on the attack. During his visit, Petro met with Cuban President Miguel Díaz-Canel to discuss what Havana describes as the United States’ “policy of suffocation” toward the island.
Iran Rejects Negotiations With U.S. as Strait of Hormuz Remains Blocked Amid New Attack
U.S. Defense Secretary to Close Multinational Military Exercises in Panama to Protect Canal
Lula Launches Re-Election Campaign Amid Rising Tensions With Trump
Tec de Monterrey honors one of its students for his contribution to nanotechnology in medicine
Defense Minister commends salvadoran soldier for Central American Cross Country victory
Extension of the state of emergency approved in southern Chile
-
International4 days agoEU Faces Migration Crisis After 60,000 Migrants Arrive in Spain’s Ceuta Enclave
-
International9 hours agoIran Rejects Negotiations With U.S. as Strait of Hormuz Remains Blocked Amid New Attack
-
International2 days agoTruck bomb attack near police station in Colombia leaves 14 injured ahead of presidential inauguration
-
International1 day agoLula Launches Re-Election Campaign Amid Rising Tensions With Trump
-
Central America9 hours agoU.S. Defense Secretary to Close Multinational Military Exercises in Panama to Protect Canal