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
Police investigate deaths of Rob Reiner and wife as apparent homicide
The Los Angeles Police Department (LAPD) is investigating the deaths of Hollywood actor and filmmaker Rob Reinerand his wife as an “apparent homicide,” amid a wave of tributes to the director of classics such as When Harry Met Sally.
According to U.S. media reports on Sunday, Rob Reiner and Michele Singer Reiner were found dead at their Los Angeles mansion with what appeared to be stab wounds.
Several political figures shared messages of condolence following the reported deaths of the director of A Few Good Menand his wife.
While the LAPD did not officially confirm the identities of the victims, it stated that homicide detectives were dispatched to the Reiner residence.
“At this time, no additional details are available and the investigation into an apparent homicide is ongoing,” the Los Angeles Police Department said in a statement posted on social media.
LAPD Deputy Chief Alan Hamilton told reporters that no arrests have been made and that no individuals are currently being questioned as suspects.
“I’m not going to confirm whether anyone is being questioned at this moment or not. We are going to try to speak with as many family members as we can,” Hamilton said.
CNN reported that a family spokesperson confirmed the deaths of Reiner and his wife.
California Governor Gavin Newsom, former U.S. President Barack Obama, and former Vice President Kamala Harrisissued statements expressing their condolences.
International
U.S. and Mexico Reach Deal to Address Water Deficit Under 1944 Treaty
The United States and Mexico have reached an agreement to comply with current water obligations affecting U.S. farmers and ranchers and for Mexico to cover its water deficit to Texas under the 1944 Water Treaty, the U.S. Department of Agriculture said in a statement.
The department уточified that the agreement applies to both the current cycle and the water deficit from the previous cycle.
On Monday, U.S. President Donald Trump accused Mexico of failing to comply with the water-sharing treaty between the two countries, which requires the United States to deliver 1.85 billion cubic meters of water from the Colorado River, while Mexico must supply 432 million cubic meters from the Rio Grande.
Mexico is behind on its commitments. According to Washington, the country has accumulated a deficit of more than one billion cubic meters of water over the past five years.
“This violation is severely harming our beautiful crops and our livestock in Texas,” Trump wrote on Monday.
The Department of Agriculture said on Friday that Mexico had agreed to supply 250 million cubic meters of water starting next week and to work toward closing the shortfall.
Agriculture Secretary Brooke Rollins, quoted in the statement, said Mexico delivered more water in a single year than it had over the previous four years combined.
Trump has said that if Mexico continues to fall short of its obligations, the United States reserves the right to impose 5% tariffs on imported Mexican products.
Mexico’s Deputy Foreign Minister for North America, Roberto Velasco, said that a severe drought in 2022 and 2023prevented the country from meeting its commitments.
International
Several people shot in attack on Brown University campus
Several people were shot on Saturday in an attack on the campus of Brown University, in the northeastern United States, local police reported.
“Shelter in place and avoid the area until further notice,” the Providence Police Department urged in a post on X. Brown University is located in Providence, the capital of the state of Rhode Island.
U.S. President Donald Trump said on his social media platform Truth Social that he had been briefed on the situation and that the FBI was on the scene.
At 5:52 p.m. local time (11:52 p.m. GMT), Brown University said the situation was still “ongoing” and instructed students to remain sheltered until further notice.
After initially stating that the suspect had been taken into custody, Trump later posted a second message clarifying that local police had walked back that information. “The suspect has NOT been apprehended,” the U.S. president said.
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