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
Japan reopens Kashiwazaki-Kariwa Plant despite public concerns
La centrale nucléaire japonaise de Kashiwazaki-Kariwa, la plus grande au monde, a repris ses activités mercredi pour la première fois depuis la catastrophe de Fukushima en 2011, malgré les inquiétudes persistantes d’une partie de la population.
La remise en service a eu lieu à 19h02 heure locale (10h02 GMT), a indiqué à l’AFP Tatsuya Matoba, porte-parole de la compagnie Tokyo Electric Power (Tepco).
Le gouverneur de la préfecture de Niigata, où se situe la centrale, avait donné son feu vert à la reprise le mois dernier, en dépit d’une opinion publique divisée. Selon une enquête menée en septembre par la préfecture elle-même, 60 % des habitants se déclaraient opposés au redémarrage, contre 37 % favorables.
Mardi, plusieurs dizaines de manifestants ont bravé le froid et la neige pour protester près de l’entrée du site, sur les rives de la mer du Japon.
« L’électricité de Tokyo est produite à Kashiwazaki. Pourquoi seuls les habitants d’ici devraient-ils être exposés au danger ? Cela n’a aucun sens », a déclaré à l’AFP Yumiko Abe, une riveraine de 73 ans.
La centrale de Kashiwazaki-Kariwa avait été mise à l’arrêt lorsque le Japon a fermé l’ensemble de ses réacteurs nucléaires à la suite du triple désastre de mars 2011 — un séisme, un tsunami et un accident nucléaire — survenu à Fukushima.
International
Markets rise as Trump halts Europe tariffs and floats Greenland agreement framework
U.S. President Donald Trump on Wednesday lifted his threat to impose new tariffs on several European countries and said he had outlined the framework of a future agreement on Greenland during a meeting in Davos with NATO Secretary General Mark Rutte.
“Based on this understanding, I will not impose the tariffs that were scheduled to take effect on February 1,” Trump wrote on his social media platform Truth Social, without providing details about the proposed “framework.”
The announcement boosted financial markets. Wall Street, which had been trading slightly higher, extended its gains following Trump’s message, while the U.S. dollar strengthened against the euro.
Trump has repeatedly insisted that Greenland, rich in mineral resources, is ‘vital’ to the security of the United States and NATO, particularly as Arctic ice melts and global powers compete for strategic advantage in the region amid rising tensions with China and Russia.
Last week, the U.S. president threatened to impose tariffs of up to 25% on eight European countries for supporting Denmark and sending a military exploratory mission to Greenland. All of the targeted countries are NATO members, including the United Kingdom, Germany, and France, Europe’s largest economies.
Trump said on Wednesday that additional discussions are underway regarding the “Golden Dome” missile defense system, specifically in connection with Greenland.
He assigned Vice President JD Vance, Secretary of State Marco Rubio, and special envoy Steve Witkoff to lead the negotiations.
Hours before his post, Trump ruled out the use of force to seize Greenland for the first time, but demanded “immediate negotiations” for its acquisition, reiterating his view that only the United States can guarantee the security of the Arctic island.
International
Venezuela’s interim president predicts 37% increase in revenues for 2026
Venezuela’s interim president, Delcy Rodríguez, said Wednesday that the country’s revenues are expected to increase by about 37% in 2026, in a statement made during a session of the Federal Government Council at the Miraflores Presidential Palace in Caracas.
Rodríguez said the projected rise in foreign currency income comes as agreements on Venezuelan oil sales with the United States are being implemented, including deals in which Washington will trade Venezuelan crude and manage the proceeds before transferring funds to Caracas.
“This year, revenues expressed in foreign currency will increase by 37%,” Rodríguez declared, according to EFE. She noted that the increase will also benefit regional governments and local authorities. “You will have more resources for your management, which I know you need,” she added.
Rodríguez said the distribution formula for revenues will remain the same as in 2025: 53% for communes, 29% for state governments, 15% for municipalities, and 3% for institutional strengthening. She also said the government would intervene to “correct imbalances” in how funds are allocated, particularly among some municipal and regional authorities.
The announcement follows reporting that Venezuela received at least $300 million from oil revenues tied to a U.S.–Venezuela deal that could involve up to 50 million barrels of crude. Washington officials have said the interim government met U.S. requirements under the agreement.
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