"Sen. Ted Cruz thinks NASA should spend less time studying the planet and more time finding ways to go out into space.
Cruz (R-TX), who is chair of the Senate Space, Science, and Competitiveness Subcommittee, addressed his concerns at a hearing Thursday on the $18.5 billion budget request for NASA’s fiscal year 2016. There, he asked NASA Administrator Charles Bolden what Bolden thought NASA’s “core mission” was.
“Our core mission from the very beginning has been to investigate, explore space and the Earth environment, and to help us make this place a better place,” Bolden said.
Cruz wasn’t satisfied.
“Almost any American would agree that the core function of NASA is to explore space,” he said. “That’s what inspires little boys and little girls across this country … and you know that I am concerned that NASA in the current environment has lost its full focus on that core mission.”"
#RafaelCruz #NASA #ClimateChange
A primitive ocean on Mars held more water than Earth’s Arctic Ocean, according to NASA scientists who, using ground-based observatories, measured water signatures in the Red Planet’s atmosphere. Scientists have been searching for answers to why this vast water supply left the surface.
“Our study provides a solid estimate of how much water Mars once had, by determining how much water was lost to space,” said Geronimo Villanueva, a scientist at NASA’s Goddard Space Flight Center in Greenbelt, Maryland, and lead author of the new paper. “With this work, we can better understand the history of water on Mars.”
Perhaps about 4.3 billion years ago, Mars would have had enough water to cover its entire surface in a liquid layer about 450 feet (137 meters) deep. More likely, the water would have formed an ocean occupying almost half of Mars’ northern hemisphere, in some regions reaching depths greater than a mile (1.6 kilometers).
The new estimate is based on detailed observations made at the European Southern Observatory’s Very Large Telescope in Chile, and the W.M. Keck Observatory and NASA Infrared Telescope Facility in Hawaii. With these powerful instruments, the researchers distinguished the chemical signatures of two slightly different forms of water in Mars’ atmosphere. One is the familiar H2O. The other is HDO, a naturally occurring variation in which one hydrogen is replaced by a heavier form, called deuterium.
By comparing the ratio of HDO to H2O in water on Mars today and comparing it with the ratio in water trapped in a Mars meteorite dating from about 4.5 billion years ago, scientists can measure the subsequent atmospheric changes and determine how much water has escaped into space.
- WCU, NCComputer Science, 1993 - 1995
- Brevard High, NC1980 - 1984
- Brevard Middle, NC1977 - 1980
- Pisgah Forest Elementary1974 - 1977
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