Optimistic about Mars Opportunity rover, says NASA
Washington, Aug 20 : 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.
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.
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.
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'Warm and engaging atmosphere reigned', Shashi Tharoor on Putin banquet
New Delhi (PTI): Senior Congress leader Shashi Tharoor, who on Friday attended a banquet for Russian President Vladimir Putin at the Rashtrapati Bhawan, on Saturday described the atmosphere there as "warm" and "engaging", and said he enjoyed his conversations with many of the attendees.
Tharoo’s remarks came a day after President Droupadi Murmu hosted a banquet for the visiting Russian president at the Rashtrapati Bhavan here.
“Attended the @rashtrapatibhvn banquet for President Putin last night. A warm and engaging atmosphere reigned. Enjoyed my conversations with many of the attendees, especially my dining companions from the Russian delegation!" Tharoor said in a social media post.
Murmu, while welcoming President Putin and his delegation at the banquet, had said that his visit marked an important milestone -- the 25th anniversary of the India-Russia strategic partnership, which was established in October 2000 during his first visit to the country as president.
Murmu also appreciated Putin's support and personal commitment to the India-Russia special and privileged strategic partnership.
The Congress on Friday said that the leaders of the opposition, Mallikarjun Kharge and Rahul Gandhi, were not invited to the banquet, and took a swipe at Tharoor for accepting the invite.
The party’s media and publicity department head, Pawan Khera, accused the government of breaking protocols daily and not believing in democratic principles.
“There is no invite to both the LoPs, Mr (Mallikarjun) Kharge and Mr (Rahul) Gandhi. This comes as a surprise, but I don't think we should be surprised. This government is known to be breaching all protocols. What else to say, ask the government,” Khera said on Friday.
Asked about Tharoor accepting the invite for the banquet, Khera said, "Ask Mr Tharoor. All of us who are in the party, if our leaders don't get invited and we get invited, we need to question our own conscience and listen to our conscience. Politics has been played in inviting or not inviting people, which in itself is questionable, and those who accept such an invite are also questionable."
“We would have listened to our voice of conscience,” he added.
Earlier, Tharoor had said that there was a time when the chairman of the external affairs committee was routinely invited, but that practice seems to have stopped some years ago.
On Thursday, Congress leader Rahul Gandhi alleged that the government tells visiting foreign dignitaries not to meet the leader of opposition due to its "insecurity".
His remarks came hours ahead of Putin's two-day visit to India.
