Wednesday March 20, 2019
Home Lead Story SpaceX Dragon...

SpaceX Dragon Delivers To International Space Station After Delay

Three astronauts will be on board the station on Christmas, while three others will return to Earth on December 20.

0
//
SpaceX Dragon
ISRO has also tied up with the Ministry of Home Affairs to provide technical support for establishing an integrated control room for emergency management, Sivan stated. VOA

A SpaceX Dragon cargo ship finally delivered more than 2,500 kilograms of holiday treats Saturday to the International Space Station after a communications drop-out delayed the shipment.

After two approach attempts, the Dragon locked onto the orbiting lab three days after launching from Cape Canaveral in the southeastern U.S. state of Florida.

NASA nixed the first approach because of a glitch in the communication network that serves the space station.

SpaceX Dragon is pictured about 30 meters from the International Space Station before being captured minutes later at its capture point of 10 meters from the station.
SpaceX Dragon is pictured about 30 meters from the International Space Station before being captured minutes later at its capture point of 10 meters from the station. VOA
 Mission Control ordered the Dragon to back up from the station before approaching again after NASA switched another communications satellite.

With the Dragon positioned about nine meters from the station, Commander Alexander Gerst locked the lab’s robot arm onto the cargo ship one-and-a-half hours later than planned.

In addition to holiday offerings — including smoked turkey, green bean casserole and fruit cake — mice and worms also were delivered for science experiments.

Three astronauts will be on board the station on Christmas, while three others will return to Earth on December 20. Until then, the station will be home to six astronauts: Gerst, who is German, two Americans, two Russians and one Canadian. (VOA)

Next Story

Researchers Have Developed An Anti-Microbial Coating That Will Help Astronauts Fight Superbugs on ISS

"Immuno-suppression, bacterial virulence and infection risk increase with duration of spaceflight. We must continue to develop new approaches to combat bacterial infections if we are to attempt longer missions to Mars and beyond," Grohmann noted.

0
astronauts
A regular silver coating tested for comparison had only a slight anti-microbial effect, reducing the number of bacteria by 30 per cent against steel. VOA

Researchers have developed an anti-microbial coating that reduced the growth of bacteria on contamination-prone surfaces at the ISS, and could help protect astronauts beyond the Moon and Mars from the antibiotic-resistant superbugs.

Microgravity, cosmic radiation, psychological stress and unearthly conditions at the International Space Station (ISS) lead to weakened immune system and strengthening of bacteria that can put the crew at risk.

In the study, published in Frontiers in Microbiology journal, the team tested a new anti-microbial coating named AGXX, made of precious metals, on the toilet door. It proved to be highly effective.

DNA
To make matters worse, the genes responsible for these new traits can be readily shared among different species of bacteria. Pixabay

After six months, no bacteria were recovered from AGXX-coated surfaces.

Even at 12-19 months, just 12 bacteria were recovered — a reduction of 80 per cent compared with bare steel. A regular silver coating tested for comparison had only a slight anti-microbial effect, reducing the number of bacteria by 30 per cent against steel.

“AGXX contains silver and ruthenium, conditioned by a vitamin derivative, and it kills all kinds of bacteria as well as certain fungi, yeasts and viruses,” said Professor Elisabeth Grohmann from the Beuth University of Applied Sciences in Berlin, Germany.

bacteria
Thus, the bacteria they carry become harder — developing thick protective coatings and resistance to antibiotics — more vigorous, multiplying and metabolising faster.
Pixabay

“The effects are similar to bleach, except the coating is self-regenerating and never gets used up,” Grohmann said.

Grohmann noted that spaceflight can turn harmless bacteria into potential pathogens as the stress hormones leave astronauts vulnerable to infection.

Also Read:South Korea Installs Laser Beams at Road to Warn ‘Smartphone Zombies’ of Traffic

Thus, the bacteria they carry become harder — developing thick protective coatings and resistance to antibiotics — more vigorous, multiplying and metabolising faster.

To make matters worse, the genes responsible for these new traits can be readily shared among different species of bacteria.

“Immuno-suppression, bacterial virulence and infection risk increase with duration of spaceflight. We must continue to develop new approaches to combat bacterial infections if we are to attempt longer missions to Mars and beyond,” Grohmann noted. (IANS)