NASA launches satellite to track Earth's melting ice
Washington, Sep 15 : In a bid to understand Earth's ice sheets, glaciers, sea ice, snow cover and permafrost, NASA on Saturday successfully launched its Ice, Cloud and Land Elevation Satellite-2, or ICESat-2.
The satellite with a three-year mission was launched at 9.02 a.m EDT on September 15, with liftoff aboard a Delta II rocket from Space Launch Complex-2 at Vandenberg Air Force Base in California.
"Today was the #Delta II's final launch! ULALaunch used the last #Delta II rocket for the 9:02 a.m EDT liftoff of NASA_ICE's #ICESat2 this morning. Once on orbit, #ICESat2 will measure the thickness of Earth's polar ice sheets," the US space agency said in a tweet.
NASA had earlier in the day said the weather is favourable for the launch.
"The forecast remains 100 per cent 'go' on all constraints," Lt. Daniel Smith of Launch Weather Officer said while briefing the team on forecast.
It also carries twin ELFIN CubeSats
"Today's #ICESat2 launch comes with a bonus -- a pair of tiny satellites that will study how energetic electrons make their way into our atmosphere from space," NASA tweeted.
The Delta II rocket, in use since 1989, has a stellar track record. It has launched 154 times, carrying payloads aloft for NASA, the US military and commercial clients.
ICESat-2 is NASA's most advanced Laser instrument -- the Advanced Topographic Laser Altimeter System, or ATLAS.
It measures height by precisely timing how long it takes individual photons of light from a Laser to leave the satellite, bounce off Earth and return to the satellite.
The satellite will provide critical observations of how ice sheets, glaciers and sea ice are changing, leading to insights into how these changes impact people where they live, NASA said.
ICESat-2's orbit will make 1,387 unique ground tracks around Earth in 91 days and then start the same ground pattern again at the beginning.
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In phone call, PM Modi, US President Trump resolve to promote global peace, security
New Delhi, Jan 27 (PTI): Prime Minister Narendra Modi and US President Donald Trump on Monday vowed to work towards a "trusted" partnership between India and US and advance global peace and security in their first phone conversation since the American leader's inauguration last week.
Modi and Trump exchanged views on global issues, including the situation in West Asia and Ukraine, and deliberated on measures to boost bilateral cooperation in areas such as technology, trade, investment, energy and defence, an Indian readout said.
The two leaders agreed to meet soon, it said.
"Delighted to speak with my dear friend President @realDonaldTrump @POTUS.
Congratulated him on his historic second term," Modi said on 'X'.
"We are committed to a mutually beneficial and trusted partnership. We will work together for the welfare of our people and towards global peace, prosperity, and security," he said.
In a statement, the Prime Minister's Office (PMO) said the two leaders "reaffirmed" their commitment for a "mutually beneficial and trusted partnership".
"They discussed various facets of the wide-ranging bilateral Comprehensive Global Strategic Partnership and measures to advance it, including in the areas of technology, trade, investment, energy and defence," it said.
"The two leaders exchanged views on global issues, including the situation in West Asia and Ukraine, and reiterated their commitment to work together for promoting global peace, prosperity and security," the PMO said.
"The leaders agreed to remain in touch and meet soon at an early mutually convenient date," it added.
It is not immediately known whether the issues of immigration and tariff figured in the talks.
Like in many countries, there have been some concerns in India as well over the Trump administration's approach on immigration and tariff.
President Trump has already talked about slapping "100 per cent tariffs" on the BRICS grouping, a bloc that includes India too.
It is learnt that the phone call was initiated from the Indian side.
External Affairs Ministry Spokesperson Randhir Jaiswal said last week that India is looking for "bolder, bigger and a more ambitious" relationship with the US and indicated its readiness to work with the Trump administration to address issues like illegal immigration and trade.
The phone conversation between Modi and Trump came six days after External Affairs Minister S Jaishankar held separate meetings with US Secretary of State Marco Rubio and National Security Advisor Mike Waltz in Washington.
Jaishankar also attended the Quad foreign ministers' meeting in the American capital. The meeting was the Trump administration's first foreign policy engagement.
At a media briefing in Washington on January 22, Jaishankar said his meetings signalled that the Trump administration "prioritising" the bilateral relationship with India.
The external affairs minister also said that there was agreement between the two sides about the need to be bolder, bigger, and more ambitious about the bilateral relationship.
Asked about the Trump administration's policy on tariff and immigration, Jaiswal said on Friday that India is looking at addressing issues in a constructive manner.
"Our approach has always been to address issues in a constructive manner which is in keeping with the interests of both countries," he had said at his weekly media briefing last week.
"We remain in close communication with the US administration and would like to continue to work towards strengthening our economic partnership further," he said.
India is also keen to continue cooperation under the Initiative on Critical and Emerging Technology (iCET) that was launched during the tenure of the Biden administration.
