Written by Alan Buis
Pasadena, CA – With its antenna now spinning at full speed, NASA’s new Soil Moisture Active Passive (SMAP) observatory has successfully re-tested its science instruments and generated its first global maps, a key step to beginning routine science operations next month.
SMAP launched January 31st on a minimum three-year mission to map global soil moisture and detect whether soils are frozen or thawed. The mission will help scientists understand the links among Earth’s water, energy and carbon cycles; help reduce uncertainties in predicting weather and climate; and enhance our ability to monitor and predict natural hazards such as floods and droughts.
NASA’s Mars Curiosity rover measurements of Weather, Soil reveals possibility of Liquid Brine on Mars
Written by Guy Webster
NASA’s Jet Propulsion Laboratory
Pasadena, CA – Martian weather and soil conditions that NASA’s Curiosity rover has measured, together with a type of salt found in Martian soil, could put liquid brine in the soil at night.
Perchlorate identified in Martian soil by the Curiosity mission, and previously by NASA’s Phoenix Mars Lander mission, has properties of absorbing water vapor from the atmosphere and lowering the freezing temperature of water. This has been proposed for years as a mechanism for possible existence of transient liquid brines at higher latitudes on modern Mars, despite the Red Planet’s cold and dry conditions.
Written by Preston Dyches
Pasadena, CA – As NASA missions explore our solar system and search for new worlds, they are finding water in surprising places. Water is but one piece of our search for habitable planets and life beyond Earth, yet it links many seemingly unrelated worlds in surprising ways.
“NASA science activities have provided a wave of amazing findings related to water in recent years that inspire us to continue investigating our origins and the fascinating possibilities for other worlds, and life, in the universe,” said Ellen Stofan, chief scientist for the agency. “In our lifetime, we may very well finally answer whether we are alone in the solar system and beyond.”
NASA’s Airborne Snow Observatory data reveals California Tuolumne Snowpack 40 percent less water than 2014
Written by Alan Buis
Pasadena, CA – New NASA data find the snowpack in the Tuolumne River Basin in California’s Sierra Nevada — a major source of water for millions of Californians — currently contains just 40 percent as much water as it did near this time at its highest level of 2014, one of the two driest years in California’s recorded history.
The data was acquired through a partnership with the California Department of Water Resources, the San Francisco Public Utilities Commission and the Turlock and Modesto irrigation districts.
Written by Alan Buis
Pasadena, CA – The 20-foot (6-meter) “golden lasso” reflector antenna atop NASA’s new Soil Moisture Active Passive (SMAP) observatory is now ready to wrangle up high-resolution global soil moisture data, following the successful completion of a two-part procedure to spin it up to full speed.
Mission controllers at NASA’s Jet Propulsion Laboratory in Pasadena, California, on Thursday, March 26th commanded SMAP’s spun instrument assembly – the part of the observatory that spins – to increase its rotation speed from the initial rate of 5 revolutions per minute achieved on March 23rd to its final science measurement rate of 14.6 revolutions per minute.
Written by Dwayne Brown
Washington, D.C. – NASA’s Mars Atmosphere and Volatile Evolution (MAVEN) spacecraft has observed two unexpected phenomena in the Martian atmosphere: an unexplained high-altitude dust cloud and aurora that reaches deep into the Martian atmosphere.
The presence of the dust at orbital altitudes from about 93 miles (150 kilometers) to 190 miles (300 kilometers) above the surface was not predicted. Although the source and composition of the dust are unknown, there is no hazard to MAVEN and other spacecraft orbiting Mars.
Nashville, TN – As the temperatures plummet and the icy conditions take hold, the Tennessee Department of Agriculture is urging citizens to take steps to keep livestock safe and healthy.
“Most livestock tolerate cold weather well,” state veterinarian Dr. Charles Hatcher said. “However, extreme temperature changes can have a dramatic impact on an animal’s health and performance.”
Access to fresh water is a must. Stock tanks and ponds should be monitored closely and any ice should be broken if freezing occurs. «Read the rest of this article»
Written by Guy Webster
Pasadena, CA – NASA’s Mars Reconnaissance Orbiter passed a mission milestone of 40,000 orbits on February 7th, 2015, in its ninth year of returning information about the atmosphere, surface and subsurface of Mars, from equatorial to polar latitudes.
The mission’s potent science instruments and extended lifespan have revealed that Mars is a world more dynamic and diverse than was previously realized. Now in its fourth mission extension after a two-year prime mission, the orbiter is investigating seasonal and longer-term changes, including some warm-season flows that are the strongest evidence so far for liquid water on Mars today.
Written by Tony Phillips
Washington, D.C. – The next time you pour yourself a glass of water, pause before you drink it. First, swirl the clear liquid around the glass. Gently slosh it back and forth. Tap the glass on the tabletop, and watch the patterns that form on the surface.
Now imagine the same exercise … in zero gravity. Would the waves and ripples look the same? Would the liquid slosh more, or less? Faster, or slower?
NASA engineers spend a surprising amount of time asking themselves these same questions.
Written by DC Agle
Pasadena, CA – Scientists working with NASA’s 230-foot-wide (70-meter) Deep Space Network antenna at Goldstone, California, have released the first radar images of asteroid 2004 BL86. The images show the asteroid, which made its closest approach today (January 26th, 2015) at 8:19am PST (10:19am CST) at a distance of about 745,000 miles (1.2 million kilometers, or 3.1 times the distance from Earth to the moon), has its own small moon.
The 20 individual images used in the movie were generated from data collected at Goldstone on January 26th, 2015. They show the primary body is approximately 1,100 feet (325 meters) across and has a small moon approximately 230 feet (70 meters) across.
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