Tuesday March 26, 2019
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NASA is Confident Regarding Mars Opportunity Rover

However, even after the first time engineers hear from Opportunity, it would take time to fully recover, NASA said

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NASA to use Blockchain technology for air traffic management. Pixabay

There’s reason to be optimistic about Mars Opportunity rover that has been silent since June 10, after getting caught in a massive dust storm on the Red Planet that cut off solar power for the nearly 15-year-old rover, NASA said in a statement.

According to the scientists, the global dust storm is “decaying” — meaning more dust is falling out of the atmosphere than is being raised back into it. As a result, skies might soon clear enough for the solar-powered rover to recharge and attempt to “phone home.”

Studies on the state of batteries and temperatures at the location showed that they were relatively in good health before the storm, and there is not likely to be too much degradation.

Moreover, because dust storms tend to warm the environment — and the storm happened in summer — the rover should have stayed warm enough to survive, the US space agency noted.

Engineers at NASA’s Jet Propulsion Laboratory in California are now looking for signs for recovery efforts.

According to them, Opportunity will need a tau — the veil of dust blowing around — of less than 2.0 before the solar-powered rover will be able to recharge its batteries.

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Engineers at NASA’s Jet Propulsion Laboratory in California are now looking for signs for recovery efforts. Flickr

The higher the tau, the less sunlight is available; the last tau measured by Opportunity was 10.8 on June 10. To compare, an average tau for its location on Mars is usually 0.5.

Several times a week, the engineers are using NASA’s Deep Space Network, which communicates between planetary probes and Earth, to attempt to talk with Opportunity.

The massive DSN antennas ping the rover during scheduled “wake-up” times, and then search for signals sent from Opportunity in response.

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In addition, JPL’s radio science group uses special equipment on DSN antennas that can detect a wider range of frequencies. Each day, they record any radio signal from Mars over most of the rover’s daylight hours, then search the recordings for Opportunity’s “voice.”

However, even after the first time engineers hear from Opportunity, it would take time to fully recover, NASA said. (IANS)

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NASA Astronauts Spacewalk to Change ISS Batteries

Spacewalkers have now spent a total of 55 days, 21 hours and 39 minutes working outside the station

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NASA researchers have created the atmosphere of a super-hot planet outside our solar system, here on Earth. Pixabay

Two NASA astronauts – Nick Hague and Anne McClain – have successfully completed an over six hour spacewalk and replaced the ageing batteries on the International Space Station (ISS).

During the six hour, 39 minute spacewalk, Hague and McClain replaced nickel-hydrogen batteries with newer, more powerful lithium-ion batteries for the power channel on one pair of the station’s solar arrays, NASA said in a statement on Friday.

They also installed adapter plates and hooked up electrical connections for three of the six new lithium-ion batteries installed on the station’s starboard truss.

These new batteries provide an improved power capacity for operations with a lighter mass and a smaller volume than the nickel-hydrogen batteries.

The batteries store power generated by the station’s solar arrays to provide power to the station when the station is not in the sunlight, as it orbits the Earth during orbital night.

In addition, the astronaut duo also removed debris from outside of the station, securing a tieback for restraints on the Solar Array Blanket Box, NASA said.

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NASA will also have its first all-female spacewalk at the end of the month, when astronauts Anne McClain and Christina Koch will get to float around in space. The spacewalk will last about seven hours, according to the US space agency. Pixabay

McClain will again take a spacewalk on March 29 along with flight engineer Christina Koch to work on a second set of battery replacements on a different power channel in the same area of the ISS.

This would be the first-ever spacewalk with all-female spacewalkers, NASA said.

A third spacewalk on April 8 by Hague and David Saint-Jacques of the Canadian Space Agency will lay out jumper cables between the Unity module and the S0 truss, at the midpoint of the ISS’s backbone.

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This work will establish a redundant path of power to the Canadian-built robotic arm, known as Canadarm2. They will also install cables to provide for more expansive wireless communications coverage outside the orbital complex, as well as for enhanced hardwired computer network capability.

Space station crew members have until now conducted 214 spacewalks in support of assembly and maintenance of the orbiting laboratory.

Spacewalkers have now spent a total of 55 days, 21 hours and 39 minutes working outside the station. (IANS)