19 de junio de 2019
ÚLTIMAS NOTICIAS:
Hispanic World

NASA launches new satellite to measure polar ice height

Washington, Sep 15 (efe-epa).- The National Aeronautics and Space Administration (NASA) launched Saturday its ICESat-2 satellite, which will help measure changes in Earth's ice.

Washington, Sep 15 (efe-epa).- The National Aeronautics and Space Administration (NASA) launched Saturday its ICESat-2 satellite, which will help measure changes in Earth's ice.

The satellite was launched aboard a Delta 2 rocket from Vandenberg Air Force Base, California, at 6:02 am local time (1302 GMT).

"Flying free! We have spacecraft separation from the @ULALaunch #DeltaII rocket," NASA said via Twitter moments after liftoff.

The ICESat-2 satellite will provide data to analyze changes in the average annual height of the ice covering Greenland and Antarctica, carrying out 60,000 measurements per second.

The goal is to advance NASA's research on changes in polar ice heights, which began in 2003 with the first ICESat mission and continued with Operation IceBridge, starting in 2009.

"ICESat-2 represents a major technological leap in our ability to measure changes in ice height. Its Advanced Topographic Laser Altimeter System (ATLAS) measures height by timing how long it takes individual light photons to travel from the spacecraft to Earth and back," NASA said in a statement.

"ATLAS will fire 10,000 times each second, sending hundreds of trillions of photons to the ground in six beams of green light," NASA said.

This will allow ICESat-2 to obtain a "much more detailed view" of the ice surface than ICESat, its predecessor.

According to NASA, in recent years, the melting of the ice sheets of Greenland and Antarctica have raised the global sea level by more than one millimeter per year, accounting for "approximately one-third of observed sea level rise, and the rate is increasing."

NASA's objective is that the data provided by ICESat-2 will help researchers "narrow the range of uncertainty in forecasts of future sea level rise and connect those changes to climate drivers."

According to NASA, satellites have routinely measured the area covered by sea ice and have observed that the Arctic sea ice has declined about 40 percent since 1980.

Histórico de noticias
Kate del Castillo gives voice to Ciudad Juarez victims in New York theater

By Nora Quintanilla

Pence thanks Latin America for generosity in supporting Venezuela's freedom

Miami, Jun 18 (efe-epa).- Vice President Mike Pence on Tuesday renewed the "firm" commitment of the Donald Trump administration to Venezuela's "legitimate"...

Aubrey Plaza about murderous Chucky: Horror is a release we need

By David Villafranca

Bolivia inaugurates its 1st capsule hotel

La Paz, Jun 18 (efe-epa).- Comfort and a futuristic style come together in Bolivia's first capsule hotel, which starting this Tuesday will offer lodging to...

Trump's trade rep sees progress on quick USMCA pact approval

Washington, Jun 18 (efe-epa).- US Trade Representative Robert Lighthizer on Tuesday emphasized his office's "constructive" talks with Democratic lawmakers...

Brazil's Dani Alves returns to the stadium where it all started

By Carlos Meneses Sanchez

Trump: Shanahan withdraws as defense secretary nominee

Washington, Jun 18 (efe-epa).- US President Donald Trump said Tuesday that acting Pentagon chief Patrick Shanahan decided to withdraw from the process to...

OAS rejects claims of election fraud in Guatemala

Guatemala City, Jun 18 (efe-epa).- The head of the electoral mission of the Organization of American States (OAS) for Guatemala rejected Tuesday the...

HRW: Dominican women being denied sexual, reproductive rights

Santo Domingo, Jun 18 (efe-epa).- Teenage girls in the Dominican Republic are being denied their sexual and reproductive rights, including access to safe...

Mexico's president tops 1 mn YouTube subscribers

Mexico City, Jun 18 (efe-epa).- Mexican President Andres Manuel Lopez Obrador on Tuesday celebrated topping 1 million subscribers on his YouTube channel,...

Santos administration left no money for peace projects, Colombian VP says

By Jaime Ortega and Daniel Suarez

Trump says he'll meet with Xi at G20

Washington, Jun 18 (efe-epa).- President Donald Trump said Tuesday that he would have "an extended meeting" with his Chinese counterpart, Xi Jinping, at the...

Colombia vs Qatar: clash between Portugal's Queiroz, Spain's Sanchez

Sao Paulo, Jun 18 (efe-epa).- Colombia and Qatar national teams are set to square off against each other with the aim of moving a step closer to qualifying...

Argentina and Paraguay to square off in Copa America battle of the reeling

By Sebastian Meresman

2 people seriously injured during Raptors NBA championship celebration

Toronto, Canada, Jun 17 (efe-epa).- At least two people were seriously injured on Monday during the downtown Toronto celebration of the local Raptors' NBA...

Security buildup curbs flow of migrants into southern Mexico

Suchiate, Mexico, Jun 17 (efe-epa).- The growing presence of Mexican security forces has resulted in a significant reduction in the number of undocumented...

Venezuelan lawmaker accused of rebellion flees to Colombia

Caracas, Jun 17 (efe-epa).- Opposition lawmaker Richard Blanco, accused by the Venezuelan justice system of being involved in the failed military rebellion...

Paris air show opens with Airbus advantage over Boeing

By Angel Calvo

Ancient settlement in Mexico City fights to survive

By Julito Martinez

Guatemalan presidential contest headed to runoff

Guatemala City, Jun 17 (efe-epa).- Social democrat Sandra Torres and center-right hopeful Alejandro Giammattei were the top two vote-getters in the weekend...

Uruguay's Vecino undergoes medical tests, misses Copa America practice

Belo Horizonte, Brazil, Jun 17 (efe-epa).- The Uruguayan national soccer team, which made its Copa America debut over the weekend with a 4-0 blowout of...

Fashion designer Gloria Vanderbilt dies

New York, Jun 17 (efe-epa).- New York fashion designer and socialite Gloria Vanderbilt died Monday, her son, well-known CNN cable news host Anderson Cooper,...

Gunpowder, roast corn, dancing: Brazil has world's biggest feast of St. John

By Carlos Meneses Sanchez

Copa America’s nearly empty stadiums

Porto Alegre (Brazil), Jun 17 (efe-epa).- If fans are the beating heart of soccer, the 2019 Copa America as a slow pulse as its stadium looked nearly empty...