International

Learn about seven important NASA discoveries

Photo: NASA

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.

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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).

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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.

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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.

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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.

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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

Football Fan Killed in Clashes After Colombian League Match

Fans of Cúcuta Deportivo and their traditional rivals Atlético Bucaramanga clashed outside the stadium following their local league match on Tuesday, leaving one supporter dead and several others injured.

The deceased fan was stabbed, according to a senior police official in Cúcuta who confirmed the cause of death in a video statement. Local media reported that the victim was a supporter of the visiting team, Atlético Bucaramanga.

The match ended in a 2-2 draw. Authorities had banned the entry of Atlético Bucaramanga’s organized supporters into the stadium in an effort to prevent disturbances.

Despite the restrictions, violence broke out in the surrounding areas after the game. Among the injured were three police officers, an institutional source told AFP.

The incident adds to a series of recent violent episodes linked to Colombian football. The most recent occurred in December, when supporters of Atlético Nacional and Independiente Medellín clashed in the stands and on the pitch, leaving 59 people injured.

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International

Missing Spanish Sailor Rescued After 11 Days Adrift in Mediterranean

The man had departed from the port of Gandía, on Spain’s eastern coast, with the intention of reaching the southern Spanish town of Guardamar del Segura, a journey of about 150 kilometers, a spokesperson for Spain’s maritime rescue service told AFP.

Search boats and aircraft were deployed on January 17, but the operation was called off on January 22 after efforts proved unsuccessful. Alerts were then issued to vessels navigating the area in case they spotted any signs of the missing sailor.

As hopes were fading, a surveillance aircraft from the European Union’s border agency Frontex spotted the sailboat on Tuesday, along with a person signaling for help, approximately 53 nautical miles northeast of Bejaia, Algeria.

A nearby vessel, the Singapore-flagged bulk carrier Thor Confidence, carried out the rescue and is expected to bring the man to an end to his ordeal when it arrives on Thursday in the southern Spanish port city of Algeciras.

Maritime rescue services shared images on social media showing a small white sailboat drifting at sea and secured alongside the much larger ship.

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It remains unclear how the sailboat ended up hundreds of kilometers off its intended route or how the man managed to survive for so long alone in open waters.

International

Rubio Says U.S. Could Participate in Follow-Up Russia-Ukraine Talks

The United States could join a new round of talks this week aimed at ending Russia’s invasion of Ukraine, Secretary of State Marco Rubio said on Tuesday.

Teams from Kyiv and Moscow met last Friday and Saturday in Abu Dhabi in their first publicly acknowledged direct negotiations to discuss the peace initiative promoted by former U.S. President Donald Trump.

“They are going to hold follow-up talks again this week,” Rubio told the Senate Foreign Relations Committee. “There could be U.S. participation.”

However, Rubio suggested that Washington’s role may be more limited than during last week’s discussions, which included Steve Witkoff, the president’s special envoy, and Jared Kushner, Trump’s son-in-law.

The secretary of state indicated that progress may have already been made on security guarantees for Ukraine, one of Kyiv’s key demands in any agreement with Moscow after nearly four years of Russian invasion.

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“There is one remaining issue that everyone is familiar with, and that is the territorial claim over Donetsk,” Rubio said, referring to the eastern Ukrainian region that Russia wants Ukraine to cede.

“I know that active efforts are underway to see whether the positions of both sides on this issue can be reconciled. It remains a bridge we have not yet crossed,” he added during the hearing.

Rubio acknowledged that the territorial question would be particularly difficult for Ukraine to resolve.