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
Iranian leader warns foreign powers have “no place” in Strait of Hormuz
Iran’s Supreme Leader, Mojtaba Khamenei, said Thursday that the Persian Gulf is entering a new era marked by a “bright” future without the presence of the United States in the region.
His remarks came during the commemoration of Persian Gulf Day, amid ongoing regional tensions following recent military confrontations involving Iran, the United States, and Israel.
“Today, two months after the largest military buildup and aggression by the bullies of the world in the region and the humiliating defeat of the United States, a new chapter is being written for the Persian Gulf and the Strait of Hormuz,” Khamenei stated.
The Iranian leader insisted that the future of the region would be free from American influence and focused instead on the internal development and prosperity of Gulf nations.
“By the power and strength of God, the bright future of the Persian Gulf region will be a future without the United States and dedicated to the progress, welfare, and prosperity of its nations,” he said.
Khamenei also questioned the effectiveness of U.S. military bases in the region, arguing that they do not provide security even for Washington’s allies.
“Foreigners who come from thousands of miles away and commit evil and malicious acts have no place there except at the bottom of its waters,” he declared.
In addition, the Iranian leader defended new measures being prepared by Tehran to regulate maritime traffic through the Strait of Hormuz, including fees for vessels passing through the strategic waterway. According to Khamenei, the policies would generate economic benefits and greater stability for the region.
Regional tensions remain high following the conflict that erupted on February 28 between the United States and Israel against Iran, leading to strategic blockades in the Strait of Hormuz, a route through which nearly 20% of the world’s oil supply previously passed. The situation has disrupted maritime trade and contributed to rising global oil prices.
Central America
U.S. and Regional Allies Back Panama Amid Dispute With China
The United States, Bolivia, Costa Rica, Guyana, Paraguay and Trinidad and Tobago issued a joint statement in support of Panama’s sovereignty, arguing that China’s recent actions represent an attempt to politicize maritime trade and undermine the sovereignty of nations in the hemisphere.
“We are closely monitoring China’s selective economic pressure and recent actions affecting vessels flying the Panamanian flag,” the statement released Tuesday said. “Panama is a pillar of our maritime trading system and, as such, must remain free from undue external pressure.”
The statement comes amid growing tensions surrounding the Panama Canal and the operation of key ports linked to global trade.
At the end of January, Panama’s Supreme Court invalidated the legal framework supporting the 1997 concession that granted Panama Ports Company, a subsidiary of CK Hutchison, the right to operate the Balboa and Cristóbal terminals located on the Pacific and Atlantic entrances of the Panama Canal.
The ruling followed mounting pressure from the United States to curb Chinese influence around the strategic waterway, through which roughly 5% of global maritime trade passes.
CK Hutchison, which managed the ports for nearly three decades, rejected the court’s decision and accused Panamanian authorities of illegally confiscating its assets. The company has launched international arbitration proceedings against Panama, seeking more than $2 billion in damages.
Following the court ruling, reports emerged of increased detentions and inspections of Panamanian-flagged vessels in China, actions widely viewed as retaliatory measures.
On Wednesday, China’s Foreign Ministry dismissed the joint statement as “completely unfounded and misleading,” accusing the United States of politicizing port operations and warning that Beijing would take steps to protect its interests in Panama.
International
King Charles III Says U.S.-UK Alliance Is “Irreplaceable and Unbreakable”
King Charles III of the United Kingdom reaffirmed the strength of the British-American relationship on Tuesday during a speech before the United States Congress, describing the alliance between the two nations as “irreplaceable and unbreakable.”
The address, delivered at the Capitol, marked the first speech by a British monarch before Congress since Queen Elizabeth II in 1991 and comes at a time of political tensions between Donald Trump’s administration and the Labour government of Prime Minister Keir Starmer.
“As President Trump himself observed during his state visit to Britain last autumn, the bond of kinship and identity between the United States and the United Kingdom is invaluable and eternal. It is irreplaceable and unbreakable,” the king said.
While reflecting on the upcoming 250th anniversary of U.S. independence, which will be commemorated this year, Charles III stated that the partnership between the two countries “was born out of disagreement, but is no less strong because of it.”
The monarch emphasized the democratic values shared by both nations and noted that major global changes have occurred whenever the two allies found common ground.
“When we have found that way to agree, great changes have taken place not only for the benefit of our peoples, but for all peoples,” he said.
King Charles also quoted British Prime Minister Keir Starmer, who recently described the relationship as “an indispensable alliance.”
Concluding his speech, the monarch described the shared history of the United States and the United Kingdom as “a story of reconciliation, renewal, and an extraordinary partnership.”
He added that Washington and London have forged “one of the most consequential alliances in human history.”
“I pray with all my heart that our alliance continues to defend our shared values, together with our partners in Europe, the Commonwealth, and around the world, and that we ignore calls urging us to become increasingly isolationist,” Charles III stated.
The king ended by urging both nations to “recommit to one another in selfless service to our peoples and to all peoples of the world.”
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