NASA's Juno data points to new volcano on Jupiter moon Io
Washington, July 14 : Using data collected by NASA's Juno spacecraft, scientists have got clues to a previously undiscovered volcano on the Jupiter moon Io.
With its Jovian InfraRed Auroral Mapper (JIRAM) instrument, the Juno spacecraft found a new heat source close to the south pole of Io, NASA said on Saturday.
"The new Io hotspot JIRAM picked up is about 300 kilometres from the nearest previously mapped hotspot," Alessandro Mura, a Juno co-investigator from the National Institute for Astrophysics in Rome, Italy, said in a statement.
"We are not ruling out movement or modification of a previously discovered hot spot, but it is difficult to imagine one could travel such a distance and still be considered the same feature," Mura added.
The infrared data were collected on December 16, 2017, when Juno was about 470,000 kilometers away from the moon.
The Juno team will continue to evaluate data collected on the December 16 flyby, as well as JIRAM data that will be collected during future (and even closer) flybys of Io, NASA said.
Past NASA missions of exploration that have visited the Jovian system (Voyagers 1 and 2, Galileo, Cassini and New Horizons), along with ground-based observations, have located over 150 active volcanoes on Io so far.
Scientists estimate that about another 250 or so are waiting to be discovered.
Juno has logged nearly 235 million kilometres since entering Jupiter's orbit on July 4, 2016.
Juno's 13th science pass will be on July 16, the US space agency said.
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Rupee hits all-time low for second time in a week
Mumbai (PTI): The rupee depreciated 31 paise to settle at 91.99 against the US dollar on Wednesday, touching the lowest closing level for the second time in less than a week, amid increased month-end demand for the greenback.
Forex traders said the rupee opened higher as the US dollar index softened and a long-awaited trade breakthrough with Europe offered quiet reassurance. However, increased month-end demand for the American currency as well as the ongoing geopolitical tensions dented investors' sentiments.
At the interbank foreign exchange, the rupee opened at 91.60 and touched an early high of 91.50, but pared all the gains to touch an intra-day low of 91.99 against the greenback.
The domestic unit settled 31 paise down, revisiting its lowest-ever closing level of 91.99 against the greenback. The Indian currency previously ended at this level on January 23 when it also hit its all-time intraday low of 92 against the US dollar.
On Tuesday, the rupee rebounded from its all-time low levels and gained 22 paise to close at 91.68 against the US dollar.
Analysts said the rupee opened higher as the US dollar index softened and a long-awaited trade breakthrough with Europe bolstered investor sentiment.
India and the European Union on Tuesday announced the conclusion of negotiations for the free trade agreement (FTA), under which a number of domestic sectors such as apparel, chemicals and footwear will get duty-free entry into the 27-nation bloc, while the EU will get access to the Indian market at concessional duty for cars and wines, an official said.
The deal has been dubbed the "mother of all deals" as it will create a market of about 2 billion people.
Meanwhile, the dollar index, which gauges the greenback's strength against a basket of six currencies, was trading 0.07 per cent lower at 96.14.
Brent crude, the global oil benchmark, was trading 0.43 per cent lower at USD 67.28 per barrel in futures trade.
On the domestic equity market front, Sensex jumped 487.20 points to settle at 82,344.68, while Nifty surged 167.35 points to 25,342.75.
Foreign Institutional Investors turned net buyers and purchased equities worth Rs 480.26 crore on Wednesday, according to exchange data.
