NASA's Curiosity rover captures images of Martian dust storm
Washington, June 21 : With NASA engineers yet to make contact with the Opportunity Mars rover due to a massive storm on the Red Planet, scientists are pinning their hopes on learning more about Martian dust storms from images captured by the Curiosity probe.
As of Tuesday morning, the Martian dust storm had grown in size and was officially a "planet-encircling" (or "global") dust event, NASA said in a statement on Wednesday.
Though Curiosity is on the other side of Mars from Opportunity, dust has steadily increased over it, more than doubling over the weekend, NASA said.
The US space agency said the Curiosity Rover this month used its Mast Camera, or Mastcam, to snap photos of the intensifying haziness of the surface of Mars caused by the massive dust storm.
For NASA's human scientists watching from the ground, Curiosity offers an unprecedented window to answer some questions. One of the biggest: Why do some Martian dust storms last for months and grow massive, while others stay small and last only a week?
"We don't have any good idea," said Scott Guzewich, an atmospheric scientist at NASA's Goddard Space Flight Center in Greenbelt, Maryland.
Curiosity, he pointed out, plus a fleet of spacecraft in the orbit of Mars, will allow scientists for the first time to collect a wealth of dust information both from the surface and from space.
The last storm of global magnitude that enveloped Mars was in 2007, five years before Curiosity landed there.
The current storm has starkly increased dust at Gale Crater, where the Curiosity rover is studying the storm's effects from the surface.
But it poses little risk to the Curiosity rover, said Curiosity's engineers at NASA's Jet Propulsion Laboratory in Pasadena, California.
However, there was still no signal from the Opportunity rover, although a recent analysis of the rover's long-term survivability in Mars' extreme cold suggests Opportunity's electronics and batteries can stay warm enough to function.
Regardless, the project does not expect to hear from Opportunity until the skies begin to clear over the rover.
The dust storm is comparable in scale to a similar storm observed by Viking I in 1977, but not as big as the 2007 storm that Opportunity previously weathered.
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Siddaramaiah defends BPL ration card cancellation, says only ineligible beneficiaries affected
New Delhi, Nov 21: In a strong defence of the Karnataka government's move to cancel ration cards, Chief Minister Siddaramaiah on Thursday clarified that only government employees and income tax payers are being weeded out from the Below Poverty Line (BPL) list, not eligible poor beneficiaries.
Talking to reporters, Siddaramaiah asserted that the cancellation is in line with the National Food Security Act, which explicitly bars government employees and income tax payers from receiving BPL ration cards.
He accused the Bharatiya Janata Party (BJP) of raising a politically motivated issue despite originally opposing the food security legislation.
"The rights of eligible ration card holders will be fully protected," the chief minister emphasised, dismissing opposition claims that the move was linked to fund constraints for implementing poll promises.
ALSO READ: Karnataka to reissue BPL cards for eligible families: Deputy CM DK Shivakumar
The controversy stems from the Karnataka government's recent survey identifying 22.63 lakh BPL card-holders as ineligible. This move has triggered a political slugfest between the ruling Congress and the BJP.
Union Food Minister Pralhad Joshi claimed the central government had directed the state to clean the beneficiary lists. He alleged that the card cancellation was a strategy to avoid implementing the state's Gruha Lakshmi Yojana scheme.
Siddaramaiah hit back, reminding that the food security law was introduced during the Manmohan Singh government in 2013 to protect poor citizens' interests. He criticised the BJP for previously reducing food grain allocation from seven kg to five kg per beneficiary during B S Yediyurappa's tenure.
The chief minister categorically stated that there would be no compromise on the five poll guarantees and that sufficient funds were available for their implementation.
Siddaramaiah was in the national capital for the launch of Karnataka Cooperative Milk Producers' Federation Ltd's Nandini brands in Delhi. He also met Union Finance Minister Nirmala Sitharaman on the issue of farm loan.
