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
Zelenski talks to Kellogg in Kiev about sanctions against Russia and the sale of weapons to Ukraine

Ukrainian President Volodymyr Zelensky spoke on Monday with the special representative for Ukraine of the White House, retired General Keith Kellogg, about the possibility of the US approving new sanctions against Russia and sending new weapons to Ukrainians that would be paid for with European money.
“We have talked about the road to peace and what we can do together from a practical point of view so that it is closer. This includes strengthening Ukraine’s air defense, joint production and acquisition of defensive weapons in collaboration with Europe,” Zelenski wrote in X about the content of the meeting.
The Ukrainian president also mentioned “sanctions against Russia and those who help it” among the actions with which the United States can contribute to ending the war.
“We have hope in the leadership of the United States, because it is clear that Moscow will never stop if its ambitions, which are not reasonable, are not put to a hold of force,” Zelenski also wrote, who thanked Kellogg for visiting Ukraine and also showed his appreciation for the “important signs of support and positive decisions for both countries” that the US president has made public in recent days.
Kellogg has arrived in Kiev this Monday to spend this week in Ukraine and meet with local leaders. His visit comes after Trump has confirmed that he will send Patriot missile anti-aircraft systems to Ukraine for which several European countries will pay.
Trump has also recently been very critical of the attitude of Russian President Vladimir Putin, whom he reproaches for not intending to take down his arms despite the pro-peace messages that the Kremlin leader has been launching since the US began its efforts to mediate a negotiated solution to the conflict.
International
Patriot missiles, key anti-missile systems for the defense of the Ukrainian sky

The Patriot missiles, whose shipment to Ukraine has been announced in recent hours by the President of the United States, Donald Trump, who specified that his European allies “will pay for it”, are one of the main anti-ballistic defense systems of the United States Army and serve to intercept attacks launched by adversaries by land and air.
The Patriot missile, designed in the late 1970s by Raytheon originally as an anti-aircraft defense weapon, was modified in the late 1980s to counter short-range ballistic missiles.
They were not tested in combat until 1991, during the Gulf War, when they achieved fame by becoming an almost infallible weapon to now intercept and destroy the Scud missiles used by Iraq, of Soviet manufacture and much slower.
His first operation, on February 18, 1991, was the shooting down at about 5,000 meters high of a Scud missile launched from Iraq against the Saudi base in Dahran.
The Patriot system is a 2.25-meter-long missile, powered by a single-stage rocket, which weighs almost a ton and operates at three times the speed of sound (Mach 3) with a range of 70 kilometers.
The Patriot that was used in the Gulf War was carrying a 90-kilogram explosive charge that exploded by a proximity detonator with such force that the explosion and splinters destroyed the missile against which it was fired.
Since then, the system has undergone modifications that have given it greater precision and that have allowed it to increase its effectiveness not only against ballistic missiles but also against the so-called “cruise”, which have their own navigation means and change course during the flight.
Currently, the Patriot ground-to-air guided weapons system can “eliminate aircraft, helicopters and high-speed ballistic and cruise missiles,” which is possible up to “a height of 20 kilometers and a distance of 60 kilometers.”
A Patriot missile costs about 3 million dollars – three times more than a NASAMS missile (Advanced National Ground-to-Air Missile System), another of the systems that Ukraine has been using.
The Patriot system comprises a radar station, a control system and the missile launchers.
In December 2022, the United States Government, under the presidency of Joe Biden, authorized the dispatch of the Patriot missile system to Ukraine.
The supply only included an anti-aircraft battery, which includes a radar that detects and follows the target, computers, generators and a control station, in addition to eight mini-shing with four missiles ready to fire.
The North American shipment was joined by two other Patriot systems from Germany and the Netherlands, which arrived in Ukraine in April 2023.
A month later, Russia claimed to have destroyed a Patriot anti-aircraft battery in Kiev, which, however, was operational again a few days later, according to the Pentagon.
In their first month of activity alone, Patriot systems sent to Ukraine shot down more than 80 targets, including seven Russian Kinzhal supersonic missiles, according to the Ukrainian Air Force.
The first Patriots shipments have been followed by others throughout the war, including those supplied by Spain and Romania to Ukraine.
With the arrival of Donald Trump to the US presidency last January, military aid from the United States was suspended, and although Ukrainian President Volodymyr Zelensky showed his interest in buying ten Patriot systems, Trump disdained the possibility.
However, at the end of June Trump changed his mind and opened up to the possibility of supplying these missiles to Ukraine, and finally last Sunday he announced that he will send them, but that his European allies “will pay for it.”
International
The rescue operation of missing people ends after a ship was wrecked by a Houthi attack in the Red Sea

The search and rescue operation of the crew of the cargo ship ‘Eternity C’, sunk four days ago in the Red Sea after an attack by the Houthi rebels, has concluded with the rescue of 10 sailors while another 15 are still missing, the companies responsible for the operation reported on Monday.
“The decision to end the search was made by the company that owns the ship,” the maritime security companies ‘Diaplous’ and ‘Ambrey’, which carried out the search and rescue operation, said in a joint statement.
“The priority now must be to get the 10 rescued people to arrive safe and sound and provide them with the urgent medical support they need at this difficult time,” the statement said, citing the wishes of the owner company, the Greek ‘Cosmoship Management’.
The freighter was attacked on the 7th with drones, grenade launchers and speedboats by the Houthis southwest of the Yemeni port of Al Hodeida with 22 sailors on board and three armed guards, members of the security team, as a spokesman for the Greek company confirmed to EFE on the day of the attack.
The Houthi military spokesman, Yahya Sarea, said in a statement issued three days after the attack that “a group of special forces of the Yemeni Navy (Houti) intervened to rescue several members of the ship’s crew, provide them with medical care and transfer them to a safe place” without specifying the number of crew members or their whereabouts.
The US mission in Yemen accused the Houthis in a statement of kidnapping “many surviving crew members” and demanded their immediate release.
Sources that closely follow the matter estimate that six sailors are currently in the hands of the Houthis, something that has not been confirmed by the rebels, according to the digital edition of the British weekly Tradewinds, specialized in maritime affairs.
It is believed that five people have died in the attack and have sunk with the ship at the bottom of the sea, according to the same source.
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